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Machine element used to connect a rotating element to a shaft
In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft. The key prevents relative rotation between
Key_(engineering)
Topics referred to by the same term
Look up key or Keys in Wiktionary, the free dictionary. Key, Keys, The Key or The Keys may refer to: Key (cryptography), a piece of information needed
Key
Applied science and research
Engineering is the practice of systematically applying natural science and mathematics to design and improve systems, devices, or processes that solve
Engineering
Topics referred to by the same term
Keyway may refer to: A part of a keyed joint used to connect a rotating machine element to a shaft; see key (engineering) A keyhole, a hole or aperture
Keyway
Engineering branch of the United States National Academies
Academy of Engineering (NAE) is an American nonprofit, non-governmental organization. It is part of the National Academies of Sciences, Engineering, and Medicine
National Academy of Engineering
National_Academy_of_Engineering
Engineering discipline focused on robots
Robotics engineering is a branch of engineering that focuses on the conception, design, manufacturing, and operation of robots. It involves a multidisciplinary
Robotics_engineering
Specific software-based key for a computer program
reverse engineering of the program, it is possible to create programs called keygens that generate these keys for a particular program. Standard key generation
Product_key
Management of cryptographic keys
Key management is the management of cryptographic keys in a cryptosystem. This includes the lifecycle management of keys, such as the generation, exchange
Key_management
Inorganic component of bone tissue
"Morphological and Dimensional Characteristics of Bone Mineral Crystals". Key Engineering Materials. 309–311: 3–6. doi:10.4028/www.scientific.net/KEM.309-311
Bone_mineral
Mechanical or electronic fastening device
and the concomitant development of precision engineering and component standardization, locks and keys were manufactured with increasing complexity and
Lock_and_key
Used for encoding or decoding ciphertext
Tripcode Machine-readable paper key Weak key Piper, Fred (2002), "Cryptography", Encyclopedia of Software Engineering, American Cancer Society, doi:10
Key_(cryptography)
Interdisciplinary field of engineering
Systems engineering is an interdisciplinary field of engineering and engineering management that focuses on how to design, integrate, and manage complex
Systems_engineering
Internet protocol
Internet Key Exchange (IKE)", Internet Engineering Task Force (IETF), p. 6 "RFC 2409 The Internet Key Exchange (IKE)", Internet Engineering Task Force
Internet_Key_Exchange
American singer and songwriter (born 1981)
to Keys she buy her own equipment and record on her own. Keys began working separately from the label, exploring more production and engineering on her
Alicia_Keys
Engineering approach to software development
first conference on software engineering, which addressed emerging challenges in software development and played a key role in formalizing guidelines
Software_engineering
Branch of engineering studying process variables
system and changing its parameters, they are a key part of control loops. High demand for engineering professionals is found in fields associated with
Instrumentation and control engineering
Instrumentation_and_control_engineering
Singaporean corporate executive (born 1956)
is a Singaporean corporate executive who has contributed to several key engineering companies in Singapore, and is currently the Chairman of SMRT Corporation
Seah_Moon_Ming
Email authentication method designed to associate a domain with a message stream
DomainKeys Identified Mail (DKIM) is an email authentication method that permits a person, role, or organization that owns the signing domain to claim
DomainKeys_Identified_Mail
Type of turnkey project
are LSTK for lump sum turn key, EPIC for engineering, procurement, installation & commissioning and EPCC for engineering, procurement, construction and
Engineering, procurement, and construction
Engineering,_procurement,_and_construction
Software engineering approach to designing and developing information systems
planning and information systems. A key early contributor (often called the "father" of information engineering methodology) was the Australian Clive
Data_engineering
to be performed before project construction starts. Detail engineering studies are a key component for every project development across mining, infrastructure
Detailed_engineering
Branch of engineering
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems that use electricity
Electrical_engineering
Japanese electronics manufacturer
Keyence Corporation (キーエンス, Kīensu) is a Japan-based direct sales organization that develops and manufactures equipment for factory automation, sensors
Keyence
Federal statistical agency of the United States
science and engineering enterprise in the U.S. and other countries. NCSES sponsors or co-sponsors data collection on 15 surveys and produces two key publications:
National Center for Science and Engineering Statistics
National_Center_for_Science_and_Engineering_Statistics
Cryptographic protocols for securing data in transit
P; Tschofenig, H (eds.). Pre-Shared Key Ciphersuites for Transport Layer Security (TLS). Internet Engineering Task Force. doi:10.17487/RFC4279. RFC
Transport_Layer_Security
Former local electric railway service in the East Bay
The Key System (or Key Route) was a privately owned company that provided mass transit in the cities of Oakland, Berkeley, Alameda, Emeryville, Piedmont
Key_System
Use of a cavitation bubble to reduce skin friction drag on a submerged object
gas can be routed to the nose to enhance the cavitation bubble. The key engineering difficulty in supercavitation design is stability: because a supercavitating
Supercavitation
Process to maintain internal air pressure in aircraft or spacecraft
pressurization cycle tests of the entire fuselage in a water tank, and the key engineering principles learned were applied to the design of subsequent jet airliners
Cabin_pressurization
significant milestones: 1960s: Expansion of its curriculum to cover key engineering disciplines. 1970s–1980s: Development of research laboratories and
Mohammadia School of Engineering
Mohammadia_School_of_Engineering
Keypad that appears on some telephones
Engineering Department of Bell Labs. The modern keypad is laid out in a rectangular array of twelve push buttons arranged as four rows of three keys each
Telephone_keypad
Systems Engineering Body of Knowledge (SEBoK), formally known as Guide to the Systems Engineering Body of Knowledge, is a wiki-based collection of key knowledge
Systems Engineering Body of Knowledge
Systems_Engineering_Body_of_Knowledge
University in Brooklyn, New York, U.S.
has been a key center of research in the development of microwave, wireless, radar, electronics in general, polymers, industrial engineering, operations
New York University Tandon School of Engineering
New_York_University_Tandon_School_of_Engineering
Research of materials
Defects and Imperfections", Crystalline Imperfections: Key Topics in Materials Science and Engineering, ASM International, 2021-10-01, pp. 1–12, doi:10.31399/asm
Materials_science
Concept in locksmithing
In master locksmithing, key relevance is the measurable difference between an original key and a copy made of that key, either from a wax impression or
Key_relevance
Permissible limit or limits of variation
Backlash (engineering) Geometric dimensioning and tolerancing Engineering fit Key relevance Loading gauge Margin of error Precision engineering Probabilistic
Engineering_tolerance
Domain engineering is the entire process of reusing domain knowledge in the production of new software systems. It is a key concept in systematic software
Domain_engineering
List of research institution laboratories in China
Materials science, Engineering, and Medicine. According to the Ministry of Science and Technology of China, as of 2023, there were 533 State Key Laboratories
State_Key_Laboratory
Content management systems are a key technology often used in the practice of content engineering. Content engineering is the practice of organizing the
Content_engineering
Key derivation function
Laboratories' Public-Key Cryptography Standards (PKCS) series, specifically PKCS #5 v2.0, also published as Internet Engineering Task Force's RFC 2898
PBKDF2
1948 film noir crime drama
Key Largo at the Internet Broadway Database Ditzel, Paul C. (July 1, 1952). "Fast-Spreading Fire Damages Famed Warner Movie Studios". FireEngineering
Key_Largo_(film)
2024 bridge collapse near Baltimore, Maryland, US
the Francis Scott Key Bridge piers lacked the level of fender system or island barriers required of newer bridges. However, engineering experts debate whether
Francis Scott Key Bridge collapse
Francis_Scott_Key_Bridge_collapse
German multinational conglomerate
for an undisclosed amount. In 2019–2020, Siemens was identified as a key engineering company supporting the controversial Adani Carmichael coal mine in
Siemens
Application of mathematical and computational practices in finance
and computational finance, in the practice of finance. Financial engineering plays a key role in a bank's customer-driven derivatives business — delivering
Financial_engineering
Branch of engineering
aeronautical engineering and astronautical engineering. Avionics engineering is similar, but deals with the electronics side of aerospace engineering. "Aeronautical
Aerospace_engineering
Indian civil engineer (1908–2001)
– 10 August 2001) was a Sikh Indian civil engineer responsible for key engineering projects such as the Bhakra Nangal hydro power complex, Ranjit Sagar
Rachpal_Singh_Gill
multiple length scales. Key words are "Integrated", involving integrating models at multiple length scales, and "Engineering", signifying industrial utility
Integrated computational materials engineering
Integrated_computational_materials_engineering
Engineering management (also called management engineering) is the application of engineering methods, tools, and techniques to business management systems
Engineering_management
NCP engineering is a Nuremberg-based company producing software for remote access, industrial internet of things security and information security. NCP's
NCP_Engineering
Singaporean technology, defence and engineering company
Singapore Technologies Engineering or ST Engineering (ST Engg.) is a Singapore-based multinational technology, defence and engineering group with a diverse
ST_Engineering
Science of paper and papermaking
process engineering and unit operations to the manufacture of paper, chemicals, energy and related materials. The following timeline shows some of the key steps
Paper_engineering
Lake Bridge of Hangzhou-Ruili Expressway and Study on Its Key Technologies]. Railway Engineering (in Chinese). 60 (2). Changsha: Hunan Provincial Communications
List of longest suspension bridge spans
List_of_longest_suspension_bridge_spans
Principles and practice of product and service quality assurance and control
degree of attainment of quality objectives. This is a key component of the quality engineering process and, at the same time, is a prerequisite for its
Quality_engineering
National academy of the People's Republic of China
The Chinese Academy of Engineering (CAE; 中国工程院) is the national academy of the People's Republic of China for engineering. It was established in 1994 and
Chinese Academy of Engineering
Chinese_Academy_of_Engineering
Hybrid profession of sales and engineering
Sales engineering is a hybrid profession of sales and engineering that exists in industrial and commercial markets. Buying decisions in these markets
Sales_engineering
Public university in Xi'an, Shaanxi, China
Campus. NPU has a strong research capacity in engineering. It was confirmed as one of the National Key Universities by the State Council in 1960. In the
Northwestern Polytechnical University
Northwestern_Polytechnical_University
Sub-discipline of civil engineering
Hydraulic engineering as a sub-discipline of civil engineering is concerned with the flow and conveyance of fluids, principally water and sewage. One feature
Hydraulic_engineering
engineering or hardware/software engineering may be the "specialty engineering" domain. The key take away is; the context of the system engineering project
Specialty_engineering
Pottery fired without glaze
Into Bloating Behaviour Of Bone China Body During Biscuit Firing". Key Engineering Materials. 264–268: 1717–1722. doi:10.4028/www.scientific.net/KEM.264-268
Biscuit_(pottery)
Bridge in Florida, United States of America
Pigeon Key in the background Transport portal Engineering portal Florida portal List of bridges documented by the Historic American Engineering Record
Seven_Mile_Bridge
Engineering and design of shipboard systems
Marine engineering is the engineering of watercrafts, ocean systems, and ocean structures. After completing this degree, one can join a ship as an officer
Marine_engineering
Federally funded research center in Pittsburgh, Pennsylvania, United States
Software Engineering Institute (SEI) is a federally funded research and development center in Pittsburgh, Pennsylvania, United States. Founded in 1984
Software Engineering Institute
Software_Engineering_Institute
Military university in Xi'an, Shaanxi, China
centers, including 1 national engineering research centre, 4 national key laboratories. PLA Second Artillery Engineering University was founded in January
Rocket Force University of Engineering
Rocket_Force_University_of_Engineering
2025 EP by Jin
Pdogg – engineering, sound editing Wyatt Sanders – engineering (track 1) James Keys – engineering (tracks 2, 3, 5–7) Matt Thomson – engineering (tracks
Echo_(EP)
Server on which public keys are stored for others to use
Internet Engineering Task Force. Perry, Mike (Sep 29, 2013). "[tor-talk] Why the Web of Trust Sucks". "keys.openpgp.org FAQ". keys.openpgp.org. "recv-keys documentation"
Key_server_(cryptographic)
University in Xi'an, Shaanxi, China
national and provincial key scientific research bases, including 1 National Key Laboratory, 1 National Engineering Research Center, 2 Key Laboratories of the
Xi'an University of Technology
Xi'an_University_of_Technology
Bridge project in Baltimore, Maryland, US
The Francis Scott Key Bridge replacement is a project to replace the Francis Scott Key Bridge in greater Baltimore, Maryland, United States. The 1.6-mile
Francis Scott Key Bridge replacement
Francis_Scott_Key_Bridge_replacement
engineering problem at hand. A key aim of virtual engineering is to engage the human capacity for complex evaluation. The key components of such an environment
Virtual_engineering
American engineering firm
(Architecture, Engineering, Construction, Operations, and Management) in 1990. The company went on to acquire a number of engineering, design and planning
AECOM
Sub-discipline of electrical engineering
Electronics engineering is a sub-discipline of electrical engineering that emerged in the early 20th century and is distinguished by the additional use
Electronics_engineering
Field of analytic philosophy
engineering is a field in analytic philosophy that focuses on how to best assess and improve our conceptual schemes and repertoires. One of its key features
Conceptual_engineering
American professional association
501(c)(3) charitable professional organization for electrical engineering, electronics engineering, and related disciplines. Today, it is a global network of
Institute of Electrical and Electronics Engineers
Institute_of_Electrical_and_Electronics_Engineers
144.961773 The Faculty of Engineering and Information Technology at the University of Melbourne is the oldest engineering and information technology
University of Melbourne Faculty of Engineering and Information Technology
University_of_Melbourne_Faculty_of_Engineering_and_Information_Technology
First quartz wristwatch in the world; made by Seiko in 1969
It is now registered on the List of IEEE Milestones as a key advance in electrical engineering. The Astron was unveiled in Tokyo on December 25, 1969,
Astron_(wristwatch)
Moral principles within the field of engineering
Engineering ethics is the field concerned with the system of moral principles that apply to the practice of engineering. The field examines and sets the
Engineering_ethics
Concept in computer security
cryptography, Authenticated Key Exchange (AKE), also known as Authenticated Key Agreement (AKA) or Authentication and Key Establishment, refers to a class
Authenticated_Key_Exchange
Umbrella term for technical disciplines
engineering, and mathematics (STEM) is an umbrella term used to group together the related technical disciplines of science, technology, engineering,
Science, technology, engineering, and mathematics
Science,_technology,_engineering,_and_mathematics
2021 studio album by Alicia Keys
(7–9, 12) Zach Pereyra – engineering assistance (7, 9, 12) Keys, Alicia (2022). Keys II (Liner Notes) (Compact Disc). Alicia Keys. RCA Records. showbiz411
Keys_(album)
Australian aerospace company
(PDF). Boeing. Retrieved 2 October 2020. "Boeing-UQ initiative tackles key engineering skills shortage". University of Queensland. 23 September 2003. Archived
Boeing_Australia
Algorithm for public-key cryptography
cryptanalysis of the RSA (MIT) public key cryptosystem (Technical report). Department of Electrical Engineering and Computer Science, University of Wisconsin
RSA_cryptosystem
public key infrastructure (SPKI, pronounced spoo-key[citation needed]) was an attempt to overcome the complexity of traditional X.509 public key infrastructure
Simple public-key infrastructure
Simple_public-key_infrastructure
Computer communications authentication algorithm
sized key block_sized_key = computeBlockSizedKey(key, hash, blockSize) o_key_pad ← block_sized_key xor [0x5c blockSize] // Outer padded key i_key_pad ←
HMAC
Measurement that evaluates the success of an organization
Sayed, H., Supply Chain Key Performance Indicators Analysis, International Journal of Application or Innovation in Engineering & Management (IJAIEM), Volume
Performance_indicator
Version of scientific notation
Engineering notation or engineering form (also technical notation) is a version of scientific notation in which the exponent of ten is always selected
Engineering_notation
Indian company
Triveni Engineering & Industries Limited (TEIL) is an Indian conglomerate with diversified businesses in sugar and engineering, headquartered in Noida
Triveni Engineering & Industries
Triveni_Engineering_&_Industries
Branch of engineering which deals with the optimization of complex processes or systems
NASA published their own systems engineering handbooks. In the 21st century, international standardization became a key aspect, with the International Standards
Industrial_engineering
Data proving ownership of a public key
Internet Public Key Infrastructure Using X.509 (PKIX) Certificates in the Context of Transport Layer Security (TLS). Internet Engineering Task Force. p
Public_key_certificate
British engineering and metalwork fabrication company
Blackhill Engineering is a British engineering and metalwork fabrication company. The company is based in Devon and has been trading for over 60 years
Blackhill_Engineering
Process of extracting design information from anything artificial
Reverse engineering (also known as backwards engineering or back engineering) is a process or method through which one attempts to understand through deductive
Reverse_engineering
Function that derives secret keys from a secret value
cryptography, a key derivation function (KDF) is a cryptographic algorithm that derives one or more secret keys from a secret value such as a master key, a password
Key_derivation_function
American multinational information technology
Altair Engineering Inc. is an American multinational information technology company headquartered in Troy, Michigan, that provides software and cloud
Altair_Engineering
Factors that influence engineering design process
science, such as engineering). The key difference between the engineering process and the scientific process is that the engineering process focuses on
Engineering_design_process
Group of technical disciplines
reason, as a key component of a complete geotechnical engineering service, geotechnical engineers employ construction-materials engineering and testing
Geoprofessions
Analysis of data by combining engineering and statistics
Engineering statistics combines engineering and statistics using scientific methods for analyzing data. Engineering statistics involves data concerning
Engineering_statistics
Methods used to share cryptographic key material with other parties
Varshney, Pramod (2000). "A Pairwise Key Pre-Distribution Scheme for Wireless Sensor Networks". Electrical Engineering and Computer Science - Paper 36. Yu
Key_distribution
1979 studio album by Pierre Moerlen's Gong
Time is the Key is the fourth album by the band Pierre Moerlen's Gong. It was released in late 1979 by Arista Records. The album is notable for the prominent
Time_Is_the_Key
Public university in Xi'an, Shaanxi, China
covering engineering, computer science, management, economics, liberal arts and social sciences. Xidian University is one of China's National Key Universities
Xidian_University
Online digital library for K-12 engineering curriculum
and Engineering Educators Association standards. Curricular items have learning objectives, engineering connections, background information, key terms
TeachEngineering
Web development software
UWE (UML-based Web Engineering) is a software engineering approach for the development of Web applications. UWE provides a UML profile (UML extension)
UML-based_Web_Engineering
Ortman key is a coupling device used to secure two adjacent cylindrical segments of a pressure vessel common in tactical rocket motors. An Ortman key is made
Ortman_key
Public university in Beijing, China
university has 21 schools and 59 departments, with faculties in science, engineering, humanities, law, medicine, history, philosophy, economics, management
Tsinghua_University
KEY ENGINEERING
KEY ENGINEERING
Surname or Lastname
English and Scottish
English and Scottish : variant of Kay.
Male
Greek
(Κήυξ) Greek name, possibly KEYX means "kingfisher." In mythology, this is the name of a king of Thessaly, the son of Eosphoros.
Surname or Lastname
English
English : nickname from Middle English ca ‘jackdaw’, from an unattested Old Norse ká. See also Daw.English : nickname from Middle English cai, kay, kei ‘left-handed’, ‘clumsy’.English : metonymic occupational name for a locksmith, from Middle English keye, kaye ‘key’. Compare Care, Kear.English : topographic name for someone living on or near a quay, Middle English kay(e), Old French cay.English : from a Middle English personal name which figures in Arthurian legend. It is found in Old Welsh as Cai, Middle Welsh Kei, and is ultimately from the Latin personal name Gaius.Scottish and Irish : reduced form of McKay.French : variant of Quay, cognate with 2.Much shortened form of any of various names, mostly Eastern European, beginning with the letter K-.Variant of Danish and Frisian Kai.
Male
English
Short form of English Kenneth, KEN means both "born of fire" and "comely; finely made." Also used as a nickname for other names that begin with Ken-. Compare with another form of Ken.
Boy/Male
Indian, Sanskrit, Tamil
Key; Love
Boy/Male
Arabic, Muslim
Key; Opener
Girl/Female
American, British, Chinese, Dutch, English, Finnish, French, German, Greek, Hebrew, Latin, Scandinavian
Rejoiced; Short Form of Katherine and Other Names Beginning with K; Happy; Pure; Clear; Form of Katherine; Virginal; Keeper of the Keys; Elder Sister
Surname or Lastname
English
English : unexplained; possibly a respelling of Kay 6, a shortened form of Scottish and Irish McKay.Korean : There is only one Chinese character and one clan for the Kye family name. According to the Kye family genealogy, the clan was founded by a Ming Dynasty government official named Kye SÅk-son who migrated to KoryÅ and settled in today’s Suan County of Hwanghae Province. The majority of bearers of the Kye family name today live in North Korea.
Boy/Male
Bengali, English, Indian, Sindhi
Key
Boy/Male
Muslim
Key
Boy/Male
Gaelic
Son of Aidan.
Surname or Lastname
English and German
English and German : variant of Kay.Irish : reduced form of McKay.
Male
Japanese
(1-æµ, 2-ä½³, 3-敬, 4-åœ, 5-æ…§) Japanese name KEI means 1) "blessed, lucky," 2) "excellent," 3) "respect," 4) "square jewel," or 5) "wise."
Boy/Male
Indian
Key
Boy/Male
Christian, Gaelic, Indian
The One who Opens the Lock
Male
Japanese
(1-å¥, 2-謙, 3-ç ”) Japanese name KEN means 1) "healthy, strong" or 2) "modest," or 3) "study." Compare with another form of Ken.
Surname or Lastname
English
English : variant of Nye.Irish : reduced form of O’Ney.North German and Jewish (Ashkenazic) : variant of Neu. The Jewish surname may sometimes be a shortened form of a name such as Neuburger.German : habitational name from a place near Boppard.North German : nickname from Middle Low German ni(g)e, ney(g)e ‘(the) new one’.Dutch : from a short form of the personal name Aarnoud (see Arnold).Dutch (de Ney) : variant of Nay 3.
Boy/Male
Arabic
Key; Opener
Male
Turkish
Turkish name GÖKER means "man of the sky."
Boy/Male
Muslim/Islamic
Key
KEY ENGINEERING
KEY ENGINEERING
Boy/Male
Tamil
Narinder | நரிநà¯à®¤à®°
Leader of all human beings, King of men, The king
Boy/Male
Tamil
Powerful
Surname or Lastname
English
English : habitational name from Newbrough in Northumberland, named from Old English nīwe ‘new’ + burh ‘fortification’.English : In some instances, possibly a variant of Newberry.
Surname or Lastname
English
English : habitational name from a place so named near Woodstock in Oxfordshire.
Boy/Male
Hindu
Boy/Male
Welsh
Name of a priest.
Girl/Female
Spanish
which is a popular saint's name of uncertain meaning.
Surname or Lastname
English and French
English and French : topographic name for someone who lived near a forge or smithy, Middle English, Old French forge (from Latin fabrica ‘workshop’, a derivative of faber ‘smith’, ‘workman’; compare Lefevre). The surname is thus in most cases a metonymic occupational name for a smith or someone employed by a smith.
Male
Russian
(Олег) Russian form of Scandinavian Helge, OLEG means "dedicated to the gods; holy."
Girl/Female
Arabic, Muslim
Garden of Paradise
KEY ENGINEERING
KEY ENGINEERING
KEY ENGINEERING
KEY ENGINEERING
KEY ENGINEERING
n.
A key or scale closely related to another as principal; a relative or attendant key. [R.] See Attendant keys, under Attendant, a.
n.
A key for opening more locks than one; a master key.
v. t.
To fasten or secure firmly; to fasten or tighten with keys or wedges.
a.
Furnished with keys; as, a keyed instrument; also, set to a key, as a tune.
n.
A latch key.
n.
A key; a glossary.
n.
A family of tones whose regular members are called diatonic tones, and named key tone (or tonic) or one (or eight), mediant or three, dominant or five, subdominant or four, submediant or six, supertonic or two, and subtonic or seven. Chromatic tones are temporary members of a key, under such names as " sharp four," "flat seven," etc. Scales and tunes of every variety are made from the tones of a key.
n. pl.
See Kie, Ky, and Kine.
n.
See Key way, under Key.
p. pr. & vb. n.
of Key
n.
An indehiscent, one-seeded fruit furnished with a wing, as the fruit of the ash and maple; a samara; -- called also key fruit.
a.
Cold as a metallic key; lifeless.
n.
An instrument which is turned like a key in fastening or adjusting any mechanism; as, a watch key; a bed key, etc.
n.
See Key, a ledge.
v. t.
To change the key of.
n.
That part of an instrument or machine which serves as the means of operating it; as, a telegraph key; the keys of a pianoforte, or of a typewriter.
imp. & p. p.
of Key
n.
A position or condition which affords entrance, control, pr possession, etc.; as, the key of a line of defense; the key of a country; the key of a political situation. Hence, that which serves to unlock, open, discover, or solve something unknown or difficult; as, the key to a riddle; the key to a problem.
v. t.
To form a key seat, as by cutting. See Key seat, under Key.