from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An interval of time during which a characteristic, often regularly repeated event or sequence of events occurs: Sunspots increase and decrease in intensity in an 11-year cycle.
  • n. A single complete execution of a periodically repeated phenomenon: A year constitutes a cycle of the seasons.
  • n. A periodically repeated sequence of events: the cycle of birth, growth, and death; a cycle of reprisal and retaliation.
  • n. The orbit of a celestial body.
  • n. A long period of time; an age.
  • n. The aggregate of traditional poems or stories organized around a central theme or hero: the Arthurian cycle.
  • n. A series of poems or songs on the same theme: Schubert's song cycles.
  • n. A bicycle, motorcycle, or similar vehicle.
  • n. Botany A circular or whorled arrangement of flower parts such as those of petals or sepals.
  • n. Linguistics In generative grammar, the principle that allows an ordered set of linguistic rules or operations to apply repeatedly to successive stages of a derivation. Often used with the.
  • intransitive v. To occur in or pass through a cycle.
  • intransitive v. To move in or as if in a cycle.
  • intransitive v. To ride a bicycle, motorcycle, or similar vehicle.
  • transitive v. To use in or put through a cycle: cycled the heavily soiled laundry twice; cycling the recruits through eight weeks of basic training.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. An interval of space or time in which one set of events or phenomena is completed.
  • n. A complete rotation of anything.
  • n. A process that returns to its beginning and then repeats itself in the same sequence.
  • n. The members of the sequence formed by such a process.
  • n. In musical set theory, an interval cycle is the set of pitch classes resulting from repeatedly applying the same interval class to the starting pitch class.
  • n. A series of poems, songs or other works of art
  • n. A programme on a washing machine, dishwasher, or other such device.
  • n. A pedal-powered vehicle, such as a unicycle, bicycle, or tricycle; or, motorized vehicle that has either two or three wheels, such as a motorbike, motorcycle, motorized tricycle, or motortrike.
  • n. A single, a double, a triple, and a home run hit by the same player in the same game.
  • n. A closed walk or path, with or without repeated vertices allowed.
  • v. To ride a bicycle or other cycle.
  • v. To go through a cycle or to put through a cycle.
  • v. To turn power off and back on
  • v. To maintain a team's possession of the puck in the offensive zone by handling and passing the puck in a loop from the boards near the goal up the side boards and passing to back to the boards near the goal

from the GNU version of the Collaborative International Dictionary of English

  • n. An imaginary circle or orbit in the heavens; one of the celestial spheres.
  • 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.
  • n. An age; a long period of time.
  • n. An orderly list for a given time; a calendar.
  • n. The circle of subjects connected with the exploits of the hero or heroes of some particular period which have served as a popular theme for poetry, as the legend of Arthur and the knights of the Round Table, and that of Charlemagne and his paladins.
  • n. One entire round in a circle or a spire.
  • n. A bicycle or tricycle, or other light velocipede.
  • n. A motorcycle.
  • n. A series of operations in which heat is imparted to (or taken away from) a working substance which by its expansion gives up a part of its internal energy in the form of mechanical work (or being compressed increases its internal energy) and is again brought back to its original state.
  • n. A complete positive and negative, or forward and reverse, action of any periodic process, such as a vibration, an electric field oscillation, or a current alternation; one period.
  • intransitive v. To pass through a cycle{2} of changes; to recur in cycles.
  • intransitive v. To ride a bicycle, tricycle, or other form of cycle.
  • transitive v. To cause to pass through a cycle{2}.

from The Century Dictionary and Cyclopedia

  • To occur or recur in cycles.
  • [See cycle, n., 9.] To ride or take exercise on a bicycle or tricycle.
  • n. An imaginary circle or orbit in the heavens.
  • n. A round of years or a recurring period of time used as a larger unit in reckoning time; especially, a period in which certain astronomical phenomena go through a series of changes which recur in the corresponding parts of the next period.
  • n. Any long period of years; an age.
  • n. Any round of operations or events; a series which returns upon itself; specifically, in physics, a series of operations by which a substance is finally brought back to the initial state.
  • n. In literature, the aggregate of legendary or traditional matter accumulated round some mythical or heroic event or character, as the siege of Troy and the Argonautic expedition of antiquity, or the Round Table, the Cid, and the Nibelungs of medieval times, and embodied in epic or narrative poetry or in romantic prose narrative.
  • n. In botany: In the theory of spiral leaf-arrangement, a complete turn of the spire which is assumed to exist.
  • n. A closed circle or whorl of leaves.
  • n. In corals, a set of septa of equal length. See septum.
  • n. As used by the old medical sect of Methodists, an aggregate of curative means continued during a certain number of days, usually nine.
  • n. A bicycle or tricycle; a “wheel.”
  • n. A false spelling of sickle. Fuller.
  • n. In electricity, the time of one complete wave, or double reversal, of alternating currents. Frequencies are usually denoted in cycles per second. See alternating.
  • n. In chem., same as ring, n. 18.
  • n. In mech., a succession of conditions, operations, or phases which follow each other in a determinate order; specifically, in gas or internal-combustion motors, the successive changes experienced by the mixture of fuel and air in the motor cylinder.
  • n. In mathematics: In geometry, a closed path in a multiply connected region.
  • n. In function-theory, the set of homologous corners of a given region (in substitution-groups).
  • n. In meteorology, the repetition of some general atmospheric phenomenon at approximately regular intervals.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. pass through a cycle
  • n. a single complete execution of a periodically repeated phenomenon
  • v. ride a bicycle
  • n. an interval during which a recurring sequence of events occurs
  • v. ride a motorcycle
  • n. a series of poems or songs on the same theme
  • n. a wheeled vehicle that has two wheels and is moved by foot pedals
  • v. cause to go through a recurring sequence
  • n. the unit of frequency; one hertz has a periodic interval of one second
  • n. a periodically repeated sequence of events
  • v. recur in repeating sequences


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English, from Late Latin cyclus, from Greek kuklos, circle; see kwel-1 in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Late Latin cyclus, from Ancient Greek κύκλος (kyklos), reduplicated form of a Proto-Indo-European *kʷékʷlos (“circle, wheel”). Cognates include Sanskrit चक्र (cakrá), Latin colus, Old English hwēol (English wheel), English ancillary



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