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Side-channel attack in cryptography
In cryptography, electromagnetic attacks are side-channel attacks performed by measuring the electromagnetic radiation emitted from a device and performing
Electromagnetic_attack
Burst of electromagnetic energy
An electromagnetic pulse (EMP), also referred to as a transient electromagnetic disturbance (TED), is a brief burst of electromagnetic energy. The origin
Electromagnetic_pulse
Effect of a nuclear explosion on electronic equipment
A nuclear electromagnetic pulse (nuclear EMP or NEMP) is a burst of electromagnetic radiation created by a nuclear explosion. The resulting rapidly varying
Nuclear_electromagnetic_pulse
Any attack based on information gained from the implementation of a computer system
side-channel attack is a type of security exploit that uses information inadvertently leaked by a system—such as timing, power consumption, or electromagnetic or
Side-channel_attack
Subsidiary of BAE Systems
BAE Systems Electronic Systems (ES) is one of three operating groups of BAE Systems Inc., the North American subsidiary of the British global defence contractor
BAE Systems Electronic Systems
BAE_Systems_Electronic_Systems
Combat involving electronics and directed energy
Electromagnetic warfare or electronic warfare (EW) is warfare involving the use of the electromagnetic spectrum (EM spectrum) or directed energy to control
Electronic_warfare
Military unit
Electromagnetic Attack Squadron ONE FOUR ZERO (VAQ-140) is a US Navy electromagnetic attack squadron. Known as the "Patriots", the squadron operates the
VAQ-140
Military unit
Electronic Attack Squadron 209 (VAQ-209) is a United States Navy Reserve electromagnetic attack squadron. Known as the "Star Warriors", the squadron flies
VAQ-209
Military unit
Electromagnetic Attack Squadron 141 (VAQ-141), also known as the "Shadowhawks", is an EA-18G Growler squadron of the United States Navy that is based at
VAQ-141
Military unit
Electromagnetic Attack Squadron 142 (VAQ-142), also known as "The Gray Wolves", is an EA-18G Growler squadron of the United States Navy stationed at Naval
VAQ-142
U.S. naval aviation school
with the Navy Strike Fighter Weapons School (TOPGUN), Airborne Electromagnetic Attack Weapons School (HAVOC), Navy Rotary Wing Weapons School (SEAWOLF
Carrier Airborne Early Warning Weapons School
Carrier_Airborne_Early_Warning_Weapons_School
British research and development company
electromagnetic attack system. Roke has developed a range of defence and security-related systems. These include EM-Vis Deceive, an electromagnetic attack
Roke_Manor_Research
Military unit
Electromagnetic Attack Squadron 139 (VAQ-139), also known as the "Cougars", is an EA-18G Growler squadron of the United States Navy. They specialize in
VAQ-139
United States Navy squadron
Electromagnetic Attack Squadron 137 (VAQ-137) also known as the "Rooks", is a United States Navy electromagnetic attack squadron based at Naval Air Station
VAQ-137
Nationwide power outages
or a blender." The term "electromagnetic attack" often used, for a blackout of this magnitude, to refer an electromagnetic pulse (EMP) generated by a
2019_Venezuelan_blackouts
Brevity code for NATO communications
CANYON Use electromagnetic jamming on radar frequency indicated or IAW previous orders or informative call for execution of electromagnetic attack (EA) list
Multi-service tactical brevity code
Multi-service_tactical_brevity_code
Security architecture implemented in hardware
Fingerprint (computing) Side-channel attack Power analysis Electromagnetic attack Acoustic cryptanalysis Timing attack Supply chain security List of computer
Hardware_security
U.S. Navy facility for development of naval aviation training and tactics
execution of a demanding air combat and electromagnetic warfare syllabus and produces graduate-level electromagnetic warfare tacticians. The Seahawk Weapons
Naval Aviation Warfighting Development Center
Naval_Aviation_Warfighting_Development_Center
several such beings to wage an attack against Victor Stone at S.T.A.R. Labs. Stone avoided Cyborgirl's electromagnetic attack, but succeeded in defeating
List of DC Comics characters: C
List_of_DC_Comics_characters:_C
Form of eavesdropping
equipment is used for a side-channel attack on the electromagnetic emissions of electronic devices. While electromagnetic emissions are present in keyboards
Van_Eck_phreaking
Intentional electromagnetic interference (IEMI) is the malicious generation and directed use of electromagnetic energy (EM) to disrupt, degrade, or damage
Intentional electromagnetic interference
Intentional_electromagnetic_interference
Violent tactic resulting in the attacker's intentional death
A suicide attack (also known by a wide variety of other names, see below) is a deliberate attack in which the perpetrators intentionally end their own
Suicide_attack
Cryptanalytic method for unauthorized users to access data
In cryptography, a brute-force attack or exhaustive key search is a cryptanalytic attack that consists of an attacker submitting many possible keys or
Brute-force_attack
Electronic intelligence gathering method
measures (ESM) gather intelligence through passive "listening" to electromagnetic radiations of military interest. They are an aspect of electronic warfare
Electronic warfare support measures
Electronic_warfare_support_measures
Cryptographic attack
In cryptography, a timing attack is a side-channel attack in which the attacker attempts to compromise a cryptosystem by analyzing the time taken to execute
Timing_attack
1967 Israeli attack on United States Navy ship
naval headquarters knew at least three hours before the attack that the ship was "an electromagnetic audio-surveillance ship of the U.S. Navy" but concluded
USS_Liberty_incident
Electromagnetic projectile launcher
one of the major players in electromagnetic launchers; in 2012 it hosted the 16th International Symposium on Electromagnetic Launch Technology (EML 2012)
Railgun
General form of cryptanalysis applicable primarily to block ciphers
resistant to this attack and many including the Advanced Encryption Standard, have been proven secure against the attack. The attack relies primarily on
Differential_cryptanalysis
Fictional character appearing in American comic books published by Marvel Comics
his field to use as concussive force attacks. He was able to somewhat deflect Siena Blaze's electromagnetic attack that "no one short of the Hulk could
Robbie_Baldwin
2009 novel by William R. Forstchen
writer William R. Forstchen. The novel deals with an unexpected electromagnetic pulse attack on the United States as it affects the people living in and around
One_Second_After
Network attack in which valid data transmission is repeated or delayed
Keyless-Entry Systems Against Pulsed Electromagnetic Interference and Possible Improvements". IEEE Transactions on Electromagnetic Compatibility. 58 (4): 1259–1265
Replay_attack
Military unit
at Shemya Air Force Base, Alaska. The 16th Electromagnetic Warfare Squadron operates space electromagnetic warfare capabilities to achieve space superiority
16th Electromagnetic Warfare Squadron
16th_Electromagnetic_Warfare_Squadron
components, keyboards emit electromagnetic waves. These emanations could reveal sensitive information such as keystrokes. Electromagnetic emanations have turned
Computer security compromised by hardware failure
Computer_security_compromised_by_hardware_failure
Symptoms reported by US and Canadian officials abroad
diagnosis Cuba–United States relations Electromagnetic hypersensitivity – Claimed sensitivity to electromagnetic fields Electronic harassment – Delusion
Havana_syndrome
Military unit
tactics reported to be employed by the 66th Brigade including electromagnetic attacks to interfere with PLAAF aircraft and traversing valleys near ground-level
66th_Brigade_(China)
Reactive armour utilising electric charge
plasma, significantly diffusing the attack. Another version of electric armour uses layers of plates of electromagnetic metal with silicone spacers on alternate
Electric_armour
Venezuela’s states, including Caracas; the government blames it on an “electromagnetic attack.” 20 August – Venezuela introduces the bolívar soberano, removing
2019_in_Venezuela
Variant of the meet-in-the-middle method of cryptanalysis
extend the number of possibly attacked rounds by the MITM attack. Since biclique cryptanalysis is based on MITM attacks, it is applicable to both block
Biclique_attack
Uses of the 2.4 GHz ISM radio spectrum
cable standard has been proven to generate significant amounts of electromagnetic interference that can interfere with any Bluetooth devices a user has
2.4_GHz_radio_use
Standard for the encryption of electronic data
This attack requires the attacker to be able to run programs on the same system or platform that is performing AES. In December 2009 an attack on some
Advanced_Encryption_Standard
Archer-class Servant. His Noble Phantasm, System Keraunos, is a powerful electromagnetic attack that deals extra damage against servants with Earth or Sky Attribute
Nikola Tesla in popular culture
Nikola_Tesla_in_popular_culture
Form of cryptanalysis
The slide attack is a form of cryptanalysis designed to deal with the prevailing idea that even weak ciphers can become very strong by increasing the number
Slide_attack
Mass spectrometer
another technique in 1934: electromagnetic separation. This was the process that Nier had used. The principle of electromagnetic separation is that charged
Calutron
Delusion regarding mind manipulation by electronic means
harassment, electromagnetic torture, and psychotronic torture is a conspiracy theory describing the hostile use of mundane electromagnetic devices, such
Electronic_harassment
Naval History. Retrieved 23 September 2025. "USS Hermitage (LSD-34). The Attack Gator, Chronology". USS Hermitage Association. Retrieved 23 September 2025
Arleigh_Burke_Fleet_Trophy
Scientific field of study
matter (quarks and leptons) that interact via the strong, weak, and electromagnetic fundamental forces. Dynamics are described in terms of matter particles
Physics
Cryptographic attack
Correlation attacks are a class of cryptographic known-plaintext attacks for breaking stream ciphers whose keystreams are generated by combining the output
Correlation_attack
Chinese stealth multirole fighter aircraft
via electromagnetic catapults onboard the Chinese aircraft carrier Fujian. This made J-35 the first stealth fighter to accomplish electromagnetic catapult-assisted
Shenyang_J-35
Espionage using electromagnetic leakage
by masking the actual data. While much of TEMPEST is about leaking electromagnetic emanations, it also encompasses sounds and mechanical vibrations. For
Tempest_(codename)
Military unit
mission crew in early May 2025. The EA-37B is a wide-area airborne electromagnetic attack weapon system. It uses a heavily modified version of the Gulfstream
43rd Electronic Combat Squadron
43rd_Electronic_Combat_Squadron
Form of cryptanalysis
cryptography, a distinguishing attack is any form of cryptanalysis on data encrypted by a cipher that allows an attacker to distinguish the encrypted data
Distinguishing_attack
US Navy fast attack submarine class
have included a software system that can monitor and reduce their electromagnetic signatures when needed. The first full-duration, six-month deployment
Virginia-class_submarine
Division of the U.S. Naval Surface Warfare Center
Warfare supports any military action using electromagnetic energy to control the electromagnetic spectrum or attack an adversary Development NSWC Crane develops
Naval Surface Warfare Center Crane Division
Naval_Surface_Warfare_Center_Crane_Division
Attack by one or more unmanned combat aerial vehicles
missions, facilitating direct attacks on targets as part of a kill chain or through manned-unmanned teaming. Aerial drone attacks can be conducted via purpose-built
Drone_warfare
Type of cryptanalytic attack
cryptography, an interpolation attack is a type of cryptanalytic attack against block ciphers. After the two attacks, differential cryptanalysis and
Interpolation_attack
Class of supercarriers for the U.S. Navy
been pushed aft. Technological advances in electromagnetics have led to the development of an Electromagnetic Aircraft Launch System (EMALS) and an Advanced
Gerald R. Ford-class aircraft carrier
Gerald_R._Ford-class_aircraft_carrier
2006 video game
defense. The active defense protects the vehicle from all attacks (except for electromagnetic attacks) for about five seconds. The ranking and points system
Battlefield_2142
Form of cryptanalysis
cryptography, the boomerang attack is a method for the cryptanalysis of block ciphers based on differential cryptanalysis. The attack was published in 1999
Boomerang_attack
Authenticated encryption mode for block ciphers
number of platforms. Käsper and Schwabe described a "Faster and Timing-Attack Resistant AES-GCM" that achieves 10.68 cycles per byte of AES-GCM authenticated
Galois/Counter_Mode
Military unit
The United States Air Force's 114th Electromagnetic Warfare Squadron (EWS) is a Florida Air National Guard unit located at Cape Canaveral Space Force
114th Electromagnetic Warfare Squadron
114th_Electromagnetic_Warfare_Squadron
Anti-drone weapon of Turkey
electromagnetic waves by damaging the target's electronic circuits and rendering them dysfunctional. The Ejderha/AD 200, a High-Power Electromagnetic
Aselsan_Ejderha/AD_200
Chinese aircraft carrier
has three medium-voltage direct-current electromagnetic catapults, an angled landing runway with electromagnetic arresting gears, and two starboard hangar
Chinese aircraft carrier Fujian
Chinese_aircraft_carrier_Fujian
Military unit
2022. It is an associate squadron of the 16th Electromagnetic Warfare Squadron. The 380th Electromagnetic Warfare Squadron is the reserve Associate Unit
380th Electromagnetic Warfare Squadron
380th_Electromagnetic_Warfare_Squadron
List of events on 9/11/2001
The September 11 attacks of 2001, in addition to being a unique act of terrorism, constituted a media event on a scale not seen since the advent of civilian
Timeline for the day of the September 11 attacks
Timeline_for_the_day_of_the_September_11_attacks
Type of electronic detector or rectifier
characteristics of attack time, integration time, and decay time or fall-back time. Quasi-peak detectors play an important role in electromagnetic compatibility
Quasi-peak_detector
Proposed spacelaunch method
electromagnetically propel a projectile Electromagnetic Aircraft Launch System – Aircraft launching system developed for the US Navy Electromagnetic catapult –
Mass_driver
Practice and study of secure communication techniques
meaningful word or phrase) with a code word (for example, "wallaby" replaces "attack at dawn"). A cypher, in contrast, is a scheme for changing or substituting
Cryptography
Type of active side channel attack
The stress can be an electromagnetic pulse (EM pulse or laser pulse). Practical fault injection consists of using an electromagnetic probe connected to
Differential_fault_analysis
Film by Eli Roth
exposing him as the killer to the world. Eric attacks her, but Bobby intervenes. An enraged Eric attacks again, intent on killing Jessica for ruining his
Thanksgiving_(2023_film)
Hat and stereotype for conspiracy theorists
strong electromagnetic radiation on health have been documented for quite some time. The efficiency of a metal enclosure in blocking electromagnetic radiation
Tin_foil_hat
Theoretical attack on block ciphers
the eXtended Sparse Linearization (XSL) attack is a method of cryptanalysis for block ciphers. The attack was first published in 2002 by researchers
XSL_attack
Type of cryptographic attack
In cryptography, a related-key attack is any form of cryptanalysis where the attacker can observe the operation of a cipher under several different keys
Related-key_attack
Cryptanalytic attacks using a system of multivariate equations
Algebraic attack is a method of algebraic cryptanalysis by which a set of algebraic equations can be used to solve a cryptographic Boolean function that
Algebraic_attack
Reaction that splits an atomic nucleus
exothermic reaction which releases large amounts of energy both as electromagnetic radiation and as kinetic energy of the fragments (heating the bulk
Nuclear_fission
Type of cryptographic attack
cryptography, the Davies attack is a dedicated statistical cryptanalysis method for attacking the Data Encryption Standard (DES). The attack was originally created
Davies_attack
Discredited set of theories about TWA Flight 800
Possibility of Electromagnetic Interference". A professor of English and American Literature and Language at Harvard, Scarry proposed that electromagnetic interference
TWA Flight 800 conspiracy theories
TWA_Flight_800_conspiracy_theories
Cryptographic attack
A time/memory/data tradeoff attack is a type of cryptographic attack where an attacker tries to achieve a situation similar to the space–time tradeoff
Time/memory/data tradeoff attack
Time/memory/data_tradeoff_attack
Block cipher
button press. This provides protection against brute-force attack and capture and replay attack, known as RollJam for Samy Kamkar's work. For simplicity
KeeLoq
Electromagnetic radiation generated by the thermal motion of particles
of electromagnetic waves. Television and radio broadcasting waves are types of electromagnetic waves with specific wavelengths. All electromagnetic waves
Thermal_radiation
5th-century BC Chinese military treatise
Combined arms Conventional Cyber Denial Disinformation Drone / Robot Electromagnetic Firearms Infantry Loitering Missile Music Nuclear Psychological Radiological
The_Art_of_War
Use of digital attacks against a state
that the intent of the attacker dictates whether an attack is warfare or not, defining cyber warfare as "the use of cyber attacks with a warfare-like intent
Cyberwarfare
Form of cryptanalysis
1994, the differential-linear attack is a mix of both linear cryptanalysis and differential cryptanalysis. The attack utilises a differential characteristic
Differential-linear_attack
Early unclassified symmetric-key block cipher
(strengthened against differential cryptanalysis, but weakened against brute-force attacks), which was published as an official Federal Information Processing Standard
Data_Encryption_Standard
Protection of computer systems from information disclosure, theft or damage
environment can range from electromagnetic radiation, to residual effect on RAM cells which as a consequence make a cold boot attack possible, to hardware
Computer_security
Type of weapon that fires a concentrated beam of energy at its target
as an "anti-drone rifle" or "anti-drone gun" is a battery-powered electromagnetic pulse weapon held to an operator's shoulder, pointed at a flying target
Directed-energy_weapon
Naval artillery gun
the hyper-velocity projectile (HVP), originally developed for Navy electromagnetic railgun systems, from conventional 5-inch deck guns. Employing HVP
5-inch/54-caliber_Mark_45_gun
Generic space–time tradeoff cryptographic attack
The meet-in-the-middle attack (MITM), a known-plaintext attack, is a generic space–time tradeoff cryptographic attack against encryption schemes that rely
Meet-in-the-middle_attack
2022 shooting of electrical substations in North Carolina, USA
executive order that directed federal agencies to prepare for attacks involving an electromagnetic pulse. In May 2020, he issued an executive order that bans
Electrical grid security in the United States
Electrical_grid_security_in_the_United_States
The history of electromagnetic theory begins with ancient measures to understand atmospheric electricity, in particular lightning. People then had little
History of electromagnetic theory
History_of_electromagnetic_theory
Method used to relatively precisely remove material in a controlled and fine fashion
generated under low pressure (vacuum) by an electromagnetic field. High-energy ions from the plasma attack the wafer surface and react with it. A typical
Reactive-ion_etching
Chinese fourth-generation carrier-based multirole fighter
and recovered the Type 003 Fujian aircraft carrier, using Fujian's electromagnetic catapults. The J-15 appears to be structurally based on the prototype
Shenyang_J-15
American multirole fighter aircraft
anti-jamming systems into the F-15QA, allowing it to fly into heavy electromagnetic interference environment uninterrupted. F-15EX Two-seat variant for
Boeing_F-15EX_Eagle_II
Concept relating to waves and signals
spectrometer for chemical analysis. Electromagnetic spectrum refers to the full range of all frequencies of electromagnetic radiation and also to the characteristic
Spectrum_(physical_sciences)
antennas. In the field of electromagnetic environmental effects, SEAL researchers analyze, measure, and control the electromagnetic interactions among elements
GTRI Sensors and Electromagnetic Applications Laboratory
GTRI_Sensors_and_Electromagnetic_Applications_Laboratory
Warship that serves as a seagoing airbase
arrangement reduce weight, complexity, and space needed for complex steam or electromagnetic launching equipment. Vertical landing aircraft also remove the need
Aircraft_carrier
Type of cryptanalytic attack
differential cryptanalysis is a generalization of differential cryptanalysis, an attack used against block ciphers. While in standard differential cryptanalysis
Higher-order differential cryptanalysis
Higher-order_differential_cryptanalysis
Cryptography construction
Related-key Slide Rotational Side-channel Timing Power-monitoring Electromagnetic Acoustic Differential-fault XSL Interpolation Partitioning Rubber-hose
Feistel_cipher
Process of developing the AES standard
relatively small 56-bit key which was becoming vulnerable to brute-force attacks. In addition, the DES was designed primarily for hardware and was relatively
Advanced Encryption Standard process
Advanced_Encryption_Standard_process
Type of cryptographic statistical attack
The rebound attack is a tool in the cryptanalysis of cryptographic hash functions. The attack was first published in 2009 by Florian Mendel, Christian
Rebound_attack
Air Force electronic combat squadron is to use the electromagnetic spectrum (EM spectrum) to attack an enemy, or impede enemy actions by denying the use
List of United States Air Force electronic combat squadrons
List_of_United_States_Air_Force_electronic_combat_squadrons
ELECTROMAGNETIC ATTACK
ELECTROMAGNETIC ATTACK
Boy/Male
Native American
attacking hawk.
Boy/Male
Greek
Helps defend Thebes against the attackers.
Boy/Male
Greek Latin
One of the attackers of Thehes.
Boy/Male
Greek
One of the attackers against Thebes.
Girl/Female
Arabic, Muslim
Attack; This was the Name of Huyama Al-awsabiyah Al-danishqiyah; She was a Jurist of Great Rank and a Very Pious Woman
Boy/Male
Indian, Sanskrit
Attack
Girl/Female
Indian
Attack
Boy/Male
Arabic, Muslim
Attacker
Boy/Male
Arabic, Muslim
To Attack Violently and Persistently
Boy/Male
Indian, Kannada
Attack Like a Tiger
Boy/Male
Norse
Leader of the attack on Hlidarend.
Surname or Lastname
English
English : perhaps a nickname for a sarcastic, witty, or spiteful person, from early modern English squibbe ‘lampoon’, ‘satirical attack’. The word, which is probably of imitative origin, is not recorded until the 16th century; the original sense was ‘firework’.
Boy/Male
Arabic
Impetuous; Attacking Violently
Girl/Female
Latin
To seek; to attack.
Girl/Female
Muslim
Attack
Surname or Lastname
English (chiefly Nottinghamshire)
English (chiefly Nottinghamshire) : variant of Hart.German : topographic name from Middle High German hurt ‘hurdle’, ‘woven fence’.Dutch : nickname, presumably for a pugnacious or aggressive person, from Middle Dutch hort, hurt ‘strike’, ‘blow’, ‘attack’.
Boy/Male
Greek
One of the attackers in 'The Seven Against Thebes'.
Boy/Male
Greek
One of the Thebes attackers.
Boy/Male
Muslim
Attacker
Boy/Male
Arabic
Impetuous; Attacking Violently
ELECTROMAGNETIC ATTACK
ELECTROMAGNETIC ATTACK
Surname or Lastname
English (of Norman origin)
English (of Norman origin) : habitational name from a place La Manche in France, so named from Old French mont ‘hill’ (see Mont 1) + agu ‘pointed’ (Latin acutus, from acus ‘needle’, ‘point’).Irish : English surname adopted as equivalent of Gaelic Mac Taidhg, a patronymic from the byname Tadhg (see McTigue).
Boy/Male
Scandinavian English
God's friend.
Boy/Male
Hindu, Indian
Sacrifice King
Boy/Male
Hindu, Indian, Traditional
Friend of Men
Surname or Lastname
English (Norman) and French
English (Norman) and French : nickname from Old French druerie ‘love’, ‘friendship’, a derivative of dru ‘lover’, ‘friend’ (see Drew 3). In Middle English the word also had the concrete meanings ‘love affair’, ‘love token’, ‘sweetheart’.English (Norman) and French : from a Germanic personal name composed of Old High German triuwa ‘truth’, ‘trust’ + rīc ‘power(ful)’.Irish (County Roscommon) : English name adopted by bearers of Gaelic Mac an Druaidh ‘son of the druid’. Compare Drew 6.
Boy/Male
Arabic, Indian, Muslim, Parsi
Given by the Sun
Girl/Female
Arabic, Gujarati, Hindu, Indian, Kannada, Marathi, Muslim
Faithful
Female
Spanish
Feminine form of Spanish Manuel, MANUELA means "God is with us."
Female
Japanese
(1-隆å, 2-åå, 3-è²´å, 4-敬å) Japanese name TAKAKO means 1) "elevated child," 2) "pious child," 3) "noble child," or "respectful child."
Boy/Male
Hindu, Indian, Sanskrit
Seer
ELECTROMAGNETIC ATTACK
ELECTROMAGNETIC ATTACK
ELECTROMAGNETIC ATTACK
ELECTROMAGNETIC ATTACK
ELECTROMAGNETIC ATTACK
n.
The act of attacking, or falling on with force or violence; an onset; an assault; -- opposed to defense.
a.
Acting, characterized, or produced by unjust or improper force; outrageous; unauthorized; as, a violent attack on the right of free speech.
a.
Capable of being attacked.
v.
A rushing or bursting forth; a quick issue; a sudden eruption; specifically, an issuing of troops from a place besieged to attack the besiegers; a sortie.
n.
A military exercise on horseback, in which the combatants attacked each other with lances; a tournament.
n.
An attack; an assault.
v. t.
To assail with unfriendly speech or writing; to begin a controversy with; to attempt to overthrow or bring into disrepute, by criticism or satire; to censure; as, to attack a man, or his opinions, in a pamphlet.
n.
Neuralgia of the sciatic nerve, an affection characterized by paroxysmal attacks of pain in the buttock, back of the thigh, or in the leg or foot, following the course of the branches of the sciatic nerve. The name is also popularly applied to various painful affections of the hip and the parts adjoining it. See Ischiadic passion, under Ischiadic.
n.
The act, art, or practice of vaccinating, or inoculating with the cowpox, in order to prevent or mitigate an attack of smallpox. Cf. Inoculation.
a.
Moving or acting with physical strength; urged or impelled with force; excited by strong feeling or passion; forcible; vehement; impetuous; fierce; furious; severe; as, a violent blow; the violent attack of a disease.
n.
A fatal distemper which attacks sheep and sometimes other animals. It is due to the presence of a parasitic worm in the liver or gall bladder. See 1st Fluke, 2.
imp. & p. p.
of Attack
v. t.
To engage with; to attack.
v. t.
To make the object of satire; to attack with satire; to censure with keenness or severe sarcasm.
n.
One who attacks.
v. i.
To leap or rush out; to burst forth; to issue suddenly; as a body of troops from a fortified place to attack besiegers; to make a sally.
n. pl.
A division of insects, considered by some writers a distinct order, but regarded by others as belonging to the Hemiptera. They are all of small size, and have narrow, broadly fringed wings with rudimentary nervures. Most of the species feed upon the juices of plants, and some, as those which attack grain, are very injurious to crops. Called also Physopoda. See Thrips.
p. pr. & vb. n.
of Attack
v. i.
To make an onset or attack.
v. i.
To make war; to invade or attack a state or nation with force of arms; to carry on hostilities; to be in a state by violence.