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Thermodynamic cycle converting thermal energy into mechanical power
The Hygroscopic cycle is a thermodynamic cycle converting thermal energy into mechanical power by the means of a steam turbine. It is similar to the Rankine
Hygroscopic_cycle
Phenomenon of attracting and holding water molecules
characteristic or property of the substance. For example, a finely dispersed hygroscopic powder, such as a salt, may become clumpy over time due to collection
Hygroscopy
Linked cyclic series of thermodynamic processes
A thermodynamic cycle consists of linked sequences of thermodynamic processes that involve transfer of heat and work into and out of the system, while
Thermodynamic_cycle
Thermodynamic cycle
The Atkinson-cycle engine is a type of internal combustion engine invented by James Atkinson in 1882. The Atkinson cycle is designed to provide efficiency
Atkinson_cycle
Model that is used to predict the performance of steam turbine systems
The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines or reciprocating steam
Rankine_cycle
Thermodynamic cycle
The Brayton cycle, also known as the Joule cycle, is a thermodynamic cycle that describes the operation of certain heat engines that have air or some other
Brayton_cycle
Assembly of heat engines that work in tandem from the same source of heat
A combined-cycle power plant is an assembly of heat engines that work in tandem from the same source of heat, converting it into mechanical energy. On
Combined-cycle_power_plant
Thermodynamic cycle for spark ignition piston engines
An Otto cycle (named after Nicolaus Otto) is an idealized thermodynamic cycle that describes the functioning of a typical spark ignition piston engine
Otto_cycle
Engine combustion process
The Diesel cycle is a combustion process of a reciprocating internal combustion engine. In it, fuel is ignited by heat generated during the compression
Diesel_cycle
Idealized thermodynamic cycle
A Carnot cycle is an ideal thermodynamic cycle proposed by French physicist Sadi Carnot in 1824 and expanded upon by others in the 1830s and 1840s. By
Carnot_cycle
Thermodynamic cycle
In engineering, the Miller cycle is a thermodynamic cycle used in a type of internal combustion engine. The Miller cycle was patented by Ralph Miller
Miller_cycle
Thermodynamic cycle that includes the basic Stirling engine
The Stirling cycle is a thermodynamic cycle that describes the general class of Stirling devices. This includes the original Stirling engine that was invented
Stirling_cycle
Mathematical models of heat pumps and refrigeration
Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pump, air conditioning and refrigeration systems
Heat pump and refrigeration cycle
Heat_pump_and_refrigeration_cycle
Type of thermodynamic cycle
engine cycles and developing practical engines based on these cycles. His first cycle is now known as the closed Brayton cycle, while his second cycle is
Ericsson_cycle
Variation on the Rankine thermodynamic cycle
engineering, the Organic Rankine cycle (ORC) is a type of thermodynamic cycle. It is a variation of the Rankine cycle named for its use of an organic,
Organic_Rankine_cycle
Closed-cycle regenerative heat engine
the Stirling engine is a closed-cycle regenerative heat engine, with a permanent gaseous working fluid. Closed-cycle, in this context, means a thermodynamic
Stirling_engine
Rocket engine operation method
The expander cycle is a power cycle of a Bipropellant liquid rocket engine. In this cycle, the fuel is used to cool the engine's combustion chamber, picking
Expander_cycle
Idealized thermodynamic cycle used in engines
The Lenoir cycle is an idealized thermodynamic cycle often used to model a pulse jet engine. It is based on the operation of an engine patented by Jean
Lenoir_cycle
Chemical process in the liquefaction of gas
The Hampson–Linde cycle is a process for the liquefaction of gases, especially for air separation. William Hampson and Carl von Linde independently filed
Hampson–Linde_cycle
System that converts heat or thermal energy to mechanical work
(ICE): Otto cycle (e.g. gasoline/petrol engine) Diesel cycle (e.g. Diesel engine) Atkinson cycle (Atkinson engine) Brayton cycle or Joule cycle originally
Heat_engine
Thermodynamic process
The Kalina cycle, developed by Alexander Kalina, is a thermodynamic process for converting thermal energy into usable mechanical power. It uses a solution
Kalina_cycle
Thermodynamic cycle for combustion engines
combustion cycle (also known as the mixed cycle, Trinkler cycle, Seiliger cycle or Sabathe cycle) is a thermal cycle that is a combination of the Otto cycle and
Mixed/dual_cycle
Refrigeration process
the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and
Vapor-compression refrigeration
Vapor-compression_refrigeration
Closed thermodynamic cycle involving fluid
cycle is a closed thermodynamic cycle where the working fluid goes through both subcritical and supercritical states. In particular, for power cycles
Transcritical_cycle
Stirling engine. The generalized thermodynamic processes of the 1919 Stoddard cycle are: Adiabatic compression Isobaric heat-addition Adiabatic expansion Isobaric
Stoddard_engine
Inverted Brayton Cycle (IBC) (also known as Subatmospheric Brayton cycle) is another version of the conventional Brayton cycle but with a turbine positioned
Inverted_Brayton_cycle
Engine in which fuel combusts with an oxidizer
engines. By number of strokes: Two-stroke engine Clerk cycle Day cycle Four-stroke engine (Otto cycle) Six-stroke engine By type of ignition: Compression-ignition
Internal_combustion_engine
The pseudo Stirling cycle, also known as the adiabatic Stirling cycle, is a thermodynamic cycle with an adiabatic working volume and isothermal heater
Pseudo_Stirling_cycle
Technique for cooling gases
where it cools the incoming compressed gas. Stirling cycle Gifford–McMahon cycle Vuilleumier cycle Pulse tube refrigerator In 1857, Siemens introduced
Regenerative_cooling
Gas cooling and liquefaction technique
The Siemens cycle is a technique used to cool or liquefy gases. A gas is compressed, leading to an increase in its temperature due to the directly proportional
Siemens_cycle
hybrid cycle (HEHC) is a new 4-stroke thermodynamic cycle combining elements of the Otto cycle, Diesel cycle, Atkinson cycle and Rankine cycle. The 3rd
High-efficiency_hybrid_cycle
Liquids below boiling point
"subcooled". Subcooling is a common stage in refrigeration cycles and steam turbine cycles. Some rocket engines use subcooled propellants. In refrigeration
Subcooling
Technique to cool gases
Kleemenko cycle or one-flow cascade cycle is a single-stream mixed-refrigerant technique used to cool or liquefy gases. The term "Kleemenko cycle" is used
Kleemenko_cycle
A Scuderi cycle is a thermodynamic cycle that is constructed out of the following series of thermodynamic processes: A-B and C-D (TOP and BOTTOM of the
Scuderi_cycle
Thermodynamic cycle
The Cheng cycle is a thermodynamic cycle which uses a combination of two working fluids, one gas and one steam. It can therefore be considered a combination
Cheng_cycle
State of thermodynamic systems where no net flow of matter or energy occurs
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Thermodynamic_equilibrium
Body of matter in a state of internal equilibrium
Isolated system Mechanical system Physical system Quantum system Thermodynamic cycle Thermodynamic process Two-state quantum system GENERIC formalism Rex & Finn
Thermodynamic_system
Type of reciprocating heat engine
and usable work. The fluid is then dumped (open cycle), or cooled, compressed and reused (closed cycle). In these types of engines, the combustion is primarily
External_combustion_engine
Device using sound waves to reduce heat
buffer). Upon entering the tube, it has the temperature TH. Later in the cycle, the same mass of gas is pushed out from the tube again when the pressure
Pulse_tube_refrigerator
Refrigerator that uses a heat source
vapor absorption cycle using water-ammonia systems was popular and widely used, but after the development of the vapor compression cycle it lost much of
Absorption_refrigerator
Passage of a system from an initial to a final state of thermodynamic equilibrium
three main kinds of thermodynamic processes: (1) changes in a system, (2) cycles in a system, and (3) flow processes. (1) A thermodynamic process is a process
Thermodynamic_process
External combustion engine using air as the working fluid
of thermodynamic cycles encompassing both open cycle devices such as those of Sir George Cayley and John Ericsson and the closed cycle engine of Robert
Hot_air_engine
Substance used to induce or sustain dryness
A desiccant is a hygroscopic substance that is used to induce or sustain a state of dryness (desiccation) in its vicinity; it is the opposite of a humectant
Desiccant
The Vuilleumier cycle was patented by a Swiss-American engineer named Rudolph Vuilleumier in 1918. The purpose of Vuilleumier's machine was to create
Vuilleumier_cycle
Unsteady state combustion process
Brayton cycle and has been used as the standard method of jet propulsion and turbine design for about a century. Contrasting with the Brayton cycle used
Pressure_gain_combustion
Treatment to dry materials
Vacuum drying is generally used for the drying of substances that are hygroscopic and heat-sensitive, and is based on the principle of creating a vacuum
Vacuum_drying
Observational basis of thermodynamics
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Laws_of_thermodynamics
Chemical compound
slightly yellowish crystalline powder that is very soluble in water and is hygroscopic. From an industrial perspective, it is the most important nitrite salt
Sodium_nitrite
Graph relating temperature and entropy during a thermodynamic process or cycle
temperature (T ) and specific entropy (s) during a thermodynamic process or cycle as the graph of a curve. It is a useful and common tool, particularly because
Temperature–entropy_diagram
flash-gas in the liquid lines reduces the efficiency of the refrigeration cycle. It can also lead several expansion systems to work improperly, and increase
Flash-gas_(refrigeration)
Order of arachnids in the arthropod phylum
the forest floor or absorb water from subsaturated air by secreting hygroscopic fluid produced by the salivary glands onto the external mouthparts and
Tick
Performance measure of a device that uses thermal energy
engine cycle equations below, and when this approximation is made the cycle is called an air-standard cycle. Otto cycle: automobiles The Otto cycle is the
Thermal_efficiency
Genus of flowering plants
centimetres (6 in) high, and bears minute white flowers. It is a capable of hygroscopic[citation needed] expansion and retraction. However, it is not a true
Anastatica
Property of a thermodynamic system
study of the Carnot cycle which is a thermodynamic cycle performed by a Carnot heat engine as a reversible heat engine. In a Carnot cycle, the heat Q H {\textstyle
Entropy
Chemical compound with formula NH4NO3
consisting of ions of ammonium and nitrate. It is highly soluble in water and hygroscopic as a solid, but does not form hydrates. It is predominantly used in agriculture
Ammonium_nitrate
Device that extracts drinkable water from humid air
2 lb) of material. Cooling-based systems are the most common, while hygroscopic systems are showing promise. Hybrid systems combine adsorption, refrigeration
Atmospheric_water_generator
Chemical compound
sulfonic acid of chlorine. It is a distillable, colorless liquid which is hygroscopic and a powerful lachrymator. Commercial samples usually are pale brown
Chlorosulfuric_acid
Relation between thermodynamic states
Stirling (pseudo/adiabatic) Stoddard Manson With phase change Kalina Hygroscopic Rankine (Organic Rankine) Regenerative Internal combustion / thermal
Adiabatic_accessibility
Type of organic compound
occur naturally, but some are synthetic. Alkylpolyamines are colorless, hygroscopic, and water soluble. Near neutral pH, they exist as the ammonium derivatives
Polyamine
Thermodynamic process of a closed system in which volume remains constant
gas will increase, but the volume will remain the same. The ideal Otto cycle is an example of an isochoric process when it is assumed that the burning
Isochoric_process
Version of the second law of thermodynamics
exchanging heat with external thermal reservoirs and undergoing a thermodynamic cycle, the following inequality holds. − ∮ d S Res = ∮ δ Q T surr ≤ 0 , {\displaystyle
Clausius_theorem
Chemical compound
It is a liquid that is stable in air, but it is hygroscopic. Pyrazolidine can be produced by cyclization of 1,3-dichloropropane or 1,3-dibromopropane with
Pyrazolidine
Animal glue sizing and adhesive
Although these substitutes are still very slightly hygroscopic, they are much less hygroscopic than rabbit-skin glue, and should not cause damage the
Rabbit-skin_glue
Chemical reaction damaging concrete
(sodium silicate hydrate), depending on the adopted convention). This hygroscopic gel swells and increases in volume when absorbing water: it exerts an
Alkali–silica_reaction
Thermodynamic process that is reversible and adiabatic
Note: The isentropic assumptions are only applicable with ideal cycles. Real cycles have inherent losses due to compressor and turbine inefficiencies
Isentropic_process
Type of energy transfer
by a cycle of thermodynamic operations and processes, which may be regarded as directed by an animate or harnessing agency. Accordingly, the cycle is still
Heat
Physical law for entropy and heat
scenarios, can then be expressed as ∫ cycle ( δ Q C C T b + δ S NetRad ) ≤ 0 {\displaystyle \int _{\text{cycle}}\left({\frac {\delta Q_{CC}}{T_{b}}}+\delta
Second_law_of_thermodynamics
Heat required to raise the temperature of a given unit of mass of a substance
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Specific_heat_capacity
Device which reduces humidity
materials or very small pores. The liquids within which absorbs water well (hygroscopic) may include glycol mixtures or ionic liquids. An ionic membrane can
Dehumidifier
Refrigeration process
The ionocaloric refrigeration cycle is a cooling technology that utilizes the ionocaloric effect, driven by an electrochemical field, to achieve efficient
Ionocaloric_refrigeration
Volume of fluid which passes per unit time
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Volumetric_flow_rate
Non-nutritive sweetener
includes fillers, all of which rapidly dissolve in water. Sucralose is not hygroscopic when humidity is below 80%, which can lead to baked goods that are noticeably
Sucralose
Species of moss
spores are released when the operculum dehisces and can be aided via hygroscopic dehiscence. They also contain peristome teeth that controls the release
Climacium_dendroides
Physical law for definition of temperature
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Zeroth_law_of_thermodynamics
Concept in general relativity and quantum field theory
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Black_hole_thermodynamics
Chemical compound (H2SO4)
not occur naturally due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid
Sulfuric_acid
Process whose direction can be reversed
conserved only in reversible adiabatic processes.) Nevertheless, the Carnot cycle demonstrates that the state of the surroundings may change in a reversible
Reversible process (thermodynamics)
Reversible_process_(thermodynamics)
Absorption refrigerator invented in 1930
failure, and explored practical applications for different refrigeration cycles. Einstein had worked in the Swiss Patent Office, and used his experience
Einstein_refrigerator
Properties independent of system size, and proportional to system size
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Intensive and extensive properties
Intensive_and_extensive_properties
Physical property of matter
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Heat_capacity
Machine that removes heat from a liquid coolant
(4 °C), creating the refrigerant effect. (This vacuum is created by hygroscopic action – the strong affinity lithium bromide has for water – in the Absorber
Chiller
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Internal_pressure
Physical quantity
in the oscillation cycle it is entirely kinetic, and at two points it is entirely potential. Over a whole cycle, or over many cycles, average energy is
Energy
Physical quantity of hot and cold
engine, imagined to run in a fictive continuous cycle of successive processes that traverse a cycle of states of its working body. The engine takes in
Temperature
Hermetically sealed glass vial
air-sensitive reagents like tetrakis(triphenylphosphine)palladium(0), hygroscopic materials like deuterated solvents and trifluoromethanesulfonic acid
Ampoule
Thermodynamic process
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Quasistatic_process
Thermodynamic potential
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Helmholtz_free_energy
Chemical law
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Piobert's_law
hot air engine. 1824 – Nicolas Léonard Sadi Carnot developed the Carnot cycle and the associated hypothetical Carnot heat engine that is the basic theoretical
Timeline of heat engine technology
Timeline_of_heat_engine_technology
Chemical compound
sulfonation of hydroxylamine with oleum. It is a white, water-soluble and hygroscopic, solid, commonly represented by the condensed structural formula H2NOSO3H
Hydroxylamine-O-sulfonic_acid
Function describing equilibrium states of a system
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
State_function
Medium to transfer power in hydraulic machinery
are hygroscopic, and absorbed moisture will greatly reduce the boiling point over time. Mineral oil and silicone based fluids are not hygroscopic. Power
Hydraulic_fluid
Textile that resists moisture penetration
the fabric, either at all times or, in the case of textiles made from hygroscopic fibers like Ventile, after the fabric has been exposed to water. In contrast
Waterproof_fabric
Parameter used to calculate the volume change of a fluid or solid in response to pressure
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Compressibility
The core objectives of his proposed study are to improve knowledge of hygroscopic seeding impacts on the warm rain initiation and quantify the potential
The UAE Research Program for Rain Enhancement Science
The_UAE_Research_Program_for_Rain_Enhancement_Science
Type of firearm propellant
Moreover, this residue contains potassium oxide or sodium oxide, which is hygroscopic and forms potassium hydroxide or sodium hydroxide upon absorbing moisture
Gunpowder
Diagram showing the relationship between pressure and volume in a system
Commonly in thermodynamics, the set of processes forms a cycle, so that upon completion of the cycle there has been no net change in state of the system;
Pressure–volume_diagram
Process that cannot be undone or reversed
(2005). "Thermoeconomic analysis of an irreversible Stirling heat pump cycle". The European Physical Journal B. 50 (1–2): 367–369. arXiv:physics/0512182
Irreversible_process
Equation describing a state of matter under a given set of conditions
Brayton Carnot Cheng Diesel Ericsson Hampson–Linde High-efficiency hybrid Hygroscopic Kalina Kleemenko Lenoir Miller Mixed/dual Organic Rankine Otto Pseudo
Equation_of_state
Organic acid
glycerol, etc.) by application of catalytic procedures. Lactic acid is hygroscopic. DL-Lactic acid is miscible with water and with ethanol above its melting
Lactic_acid
HYGROSCOPIC CYCLE
HYGROSCOPIC CYCLE
Boy/Male
Hindu
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Boy/Male
Hindu
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Boy/Male
Tamil
Janardana | ஜநாரà¯à®¤à®¨
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Janardana | ஜநாரà¯à®¤à®¨
Boy/Male
Hindu, Indian, Marathi
Vishnu; The Healer; Who Cures the Disease of Birth and Death Cycles
Male
Spanish
Spanish name of Germanic origin, possibly GUIOMAR means "famous in battle." In the 13th century Vulgate Cycle of Arthurian romance, Sir Guiomar is the proud and beautiful knight of the crystal stream.
Boy/Male
Tamil
Janardhana | ஜநாரà¯à®¤à®¾à®¨à®¾
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Janardhana | ஜநாரà¯à®¤à®¾à®¨à®¾
Boy/Male
Tamil
Janardhan | ஜநாரà¯à®¤à®¨
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Janardhan | ஜநாரà¯à®¤à®¨
Male
Irish
Irish name CAILTE means "the thin man." This is the name of a character from the Fenian cycle.
Boy/Male
Tamil
Jaramarana Varjita | ஜராமாஂரநா வரà¯à®œà¯€à®¤à®¾
Free from the cycle of births and deaths
Jaramarana Varjita | ஜராமாஂரநா வரà¯à®œà¯€à®¤à®¾
Boy/Male
Tamil
Janardan | ஜநாரà¯à®¤à®¨
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Janardan | ஜநாரà¯à®¤à®¨
Boy/Male
Assamese, Hindu, Indian, Marathi
The Healer; Vishnu; Who Cures the Disease of Birth and Death Cycles
Boy/Male
Hindu
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Girl/Female
Hindu, Indian, Traditional
The Periphery or Rim of a Wheel or Cycle
Boy/Male
Hindu
Lord Krishna, One who helps people, Liberator from the cycle of birth and death
Surname or Lastname
English and French
English and French : from a Germanic personal name composed of the elements ragin ‘counsel’ + hard ‘hardy’, ‘brave’, ‘strong’, which was introduced into England by the Normans in the form Re(i)nard. This was the name borne by the cunning fox in the popular medieval cycle of beast tales, with the result that from the 13th century it began to replace the previous Old French word for the animal. Some French examples may be nicknames for crafty individuals, referring to the fox’s reputation for cunning.
Boy/Male
Hindu
Free from the cycle of births and deaths
HYGROSCOPIC CYCLE
HYGROSCOPIC CYCLE
HYGROSCOPIC CYCLE
HYGROSCOPIC CYCLE
HYGROSCOPIC CYCLE
HYGROSCOPIC CYCLE
HYGROSCOPIC CYCLE
n.
The act or practice of using a cycle; cycling.
n.
A Chaldean astronomical period or cycle, the length of which has been variously estimated from 3,600 years to 3,600 days, or a little short of 10 years.
n.
One entire round in a circle or a spire; as, a cycle or set of leaves.
a.
Of or pertaining to, or like, a plasmodium; as, the plasmodial form of a life cycle.
a.
Having the property of readily inbibing moisture from the atmosphere, or of the becoming coated with a thin film of moisture, as glass, etc.
n.
The termination or completion of a revolution, cycle, series of events, single event, or act; hence, a limit; a bound; an end; a conclusion.
a.
Of or pertaining to, or indicated by, the hygroscope; not readily manifest to the senses, but capable of detection by the hygroscope; as, glass is often covered with a film of hygroscopic moisture.
n.
An interval of time in which a certain succession of events or phenomena is completed, and then returns again and again, uniformly and continually in the same order; a periodical space of time marked by the recurrence of something peculiar; as, the cycle of the seasons, or of the year.
n.
A particular appearance or state in a regularly recurring cycle of changes with respect to quantity of illumination or form of enlightened disk; as, the phases of the moon or planets. See Illust. under Moon.
n.
A change in the form or function of a living organism, by a natural process of growth or development; as, the metamorphosis of the yolk into the embryo, of a tadpole into a frog, or of a bud into a blossom. Especially, that form of sexual reproduction in which an embryo undergoes a series of marked changes of external form, as the chrysalis stage, pupa stage, etc., in insects. In these intermediate stages sexual reproduction is usually impossible, but they ultimately pass into final and sexually developed forms, from the union of which organisms are produced which pass through the same cycle of changes. See Transformation.
a.
Pertaining to the gyroscope; resembling the motion of the gyroscope.
n.
That method of reproduction in which the successive generations are alike, the offspring, either animal or plant, running through the same cycle of existence as the parent; gamogenesis; -- opposed to heterogenesis.
imp. & p. p.
of Cycle
n.
An instrument which shows whether there is more or less moisture in the atmosphere, without indicating its amount.
a.
Average; having an intermediate value between two extremes, or between the several successive values of a variable quantity during one cycle of variation; as, mean distance; mean motion; mean solar day.
n.
A naked mobile mass of protoplasm, formed by the union of several amoebalike young, and constituting one of the stages in the life cycle of Mycetozoa and other low organisms.
n.
A series of changes or events ending where it began; a series of like events recurring in continuance; a cycle; a periodical revolution; as, the round of the seasons; a round of pleasures.
n.
One who rides a bicycle or tricycle; a cycler, or cyclist.
v. i.
To pass through a cycle of changes; to recur in cycles.
v. i.
To ride a bicycle, tricycle, or other form of cycle.