[ sahy-kuhl ]
/ ˈsaɪ kəl /
any complete round or series of occurrences that repeats or is repeated.
a round of years or a recurring period of time, especially one in which certain events or phenomena repeat themselves in the same order and at the same intervals.
any long period of years; age.
a bicycle, motorcycle, tricycle, etc.
a group of poems, dramas, prose narratives, songs etc., about a central theme, figure, or the like: the Arthurian cycle.
- a sequence of changing states that, upon completion, produces a final state identical to the original one.
- one of a succession of periodically recurring events.
- a complete alteration in which a phenomenon attains a maximum and minimum value, returning to a final value equal to the original one.
Mathematics. a permutation of a set of elements that leaves the original cyclic order of the elements unchanged.
- the smallest interval of time required to complete an operation in a computer.
- a series of computer operations repeated as a unit.
verb (used without object), cy·cled, cy·cling.
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Idioms for cycle
hit for the cycle, Baseball. (of one player) to hit a single, double, triple, and home run in one game.
Origin of cycle
1350–1400; Middle English cicle<Late Latin cyclus<Greek kýklos cycle, circle, wheel, ring, disk, orb; see wheel
OTHER WORDS FROM cyclesu·per·cy·cle, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for cycle
/ (ˈsaɪkəl) /
a recurring period of time in which certain events or phenomena occur and reach completion or repeat themselves in a regular sequence
a completed series of events that follows or is followed by another series of similar events occurring in the same sequence
the time taken or needed for one such series
a vast period of time; age; aeon
a group of poems or prose narratives forming a continuous story about a central figure or eventthe Arthurian cycle
a series of miracle playsthe Chester cycle
a group or sequence of songsSee song cycle
astronomy the orbit of a celestial body
a recurrent series of events or processes in plants and animalsa life cycle; a growth cycle; a metabolic cycle
physics a continuous change or a sequence of changes in the state of a system that leads to the restoration of the system to its original state after a finite period of time
one of a series of repeated changes in the magnitude of a periodically varying quantity, such as current or voltage
- a set of operations that can be both treated and repeated as a unit
- the time required to complete a set of operations
- one oscillation of the regular voltage waveform used to synchronize processes in a digital computer
(in generative grammar) the set of cyclic rules
(tr) to process through a cycle or system
(intr) to move in or pass through cycles
to travel by or ride a bicycle or tricycle
Derived forms of cyclecycling, noun, adjective
Word Origin for cycle
C14: from Late Latin cyclus, from Greek kuklos cycle, circle, ring, wheel; see wheel
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for cycle
[ sī′kəl ]
An interval of time during which a characteristic, often regularly repeated event or sequence of events occurs.
A single complete execution of a periodically repeated phenomenon.
A periodically repeated sequence of events.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for cycle
[ sī′kəl ]
A single complete execution of a periodically repeated phenomenon. See also period.
A circular or whorled arrangement of flower parts such as those of petals or stamens.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.