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Meaning of CYCLE

Pronunciation:  'sIkul

WordNet Dictionary
  1. [n]  a shortened version of `bicycle' or `tricycle' or `motorcycle'
  2. [n]  a single complete execution of a periodically repeated phenomenon; "a year constitutes a cycle of the seasons"
  3. [n]  a periodically repeated sequence of events; "a cycle of reprisal and retaliation"
  4. [n]  a series of poems or songs on the same theme; "schubert's song cycles"
  5. [n]  the unit of frequency; one Hertz has a periodic interval of one second
  6. [n]  an interval during which a recurring sequence of events occurs; "the neverending cycle of the seasons"
  7. [v]  recur in cycles
  8. [v]  ride a bicycle
  9. [v]  ride a motorcycle
  10. [v]  pass through a cycle; "This machine automatically cycles"
  11. [v]  cause to go through a cycle

CYCLE is a 5 letter word that starts with C.


 Synonyms: bicycle, bike, cps, cycle per second, cycles/second, Hertz, Hz, motorcycle, oscillation, pedal, rhythm, round, wheel
 See Also: backpedal, bicycle, bike, cardiac cycle, Carnot cycle, Carnot's ideal cycle, cycle on, go across, go through, interval, kc, kHz, kick, kilocycle, kilocycle per second, kilohertz, make pass, menstrual cycle, monocycle, motor scooter, motorcycle, pass, pass, periodic event, phase, phase angle, rate, recur, recurrent event, recycle, repeat, repeat, repetition, ride, samsara, scooter, series, time interval, tricycle, trike, unicycle, velocipede, wheel, wheeled vehicle



Webster's 1913 Dictionary
  1. \Cy"cle\ (s?"k'l), n. [F. ycle, LL. cyclus, fr. Gr.
    ky`klos ring or circle, cycle; akin to Skr. cakra wheel,
    circle. See {Wheel}.]
    1. An imaginary circle or orbit in the heavens; one of the
       celestial spheres. --Milton.
    2. 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.
             Wages . . . bear a full proportion . . . to the
             medium of provision during the last bad cycle of
             twenty years.                         --Burke.
    3. An age; a long period of time.
             Better fifty years of Europe than a cycle of Cathay.
    4. An orderly list for a given time; a calendar. [Obs.]
             We . . . present our gardeners with a complete cycle
             of what is requisite to be done throughout every
             month of the year.                    --Evelyn.
    5. 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.
    6. (Bot.) One entire round in a circle or a spire; as, a
       cycle or set of leaves. --Gray.
    7. A bicycle or tricycle, or other light velocipede.
    {Calippic cycle}, a period of 76 years, or four Metonic
       cycles; -- so called from Calippus, who proposed it as an
       improvement on the Metonic cycle.
    {Cycle of eclipses}, a period of about 6,586 days, the time
       of revolution of the moon's node; -- called {Saros} by the
    {Cycle of indiction}, a period of 15 years, employed in Roman
       and ecclesiastical chronology, not founded on any
       astronomical period, but having reference to certain
       judicial acts which took place at stated epochs under the
       Greek emperors.
    {Cycle of the moon}, or {Metonic cycle}, a period of 19
       years, after the lapse of which the new and full moon
       returns to the same day of the year; -- so called from
       Meton, who first proposed it.
    {Cycle of the sun}, {Solar cycle}, a period of 28 years, at
       the end of which time the days of the month return to the
       same days of the week. The dominical or Sunday letter
       follows the same order; hence the solar cycle is also
       called the {cycle of the Sunday letter}. In the Gregorian
       calendar the solar cycle is in general interrupted at the
       end of the century.
  2. \Cy"cle\ (s?"k'l), v. i. [imp. & p. p. {Cycled}. (-k'ld);
    p. pr. & vb. n. {Cycling} (-kl?ng).]
    1. To pass through a cycle of changes; to recur in cycles.
       --Tennyson. Darwin.
    2. To ride a bicycle, tricycle, or other form of cycle.
  3. \Cy"cle\, n.
    (a) (Thermodynamics) 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.
    (b) (Elec.) A complete positive and negative wave of an
        alternating current; one period. The number of cycles
        (per second) is a measure of the frequency of an
        alternating current.
Computing Dictionary

A basic unit of computation, one period of a computer clock.

Each instruction takes a number of clock cycles. Often the computer can access its memory once on every clock cycle, and so one speaks also of "memory cycles".

Every hacker wants more cycles (noted hacker bill gosper describes himself as a "cycle junkie"). There are only so many cycles per second, and when you are sharing a computer the cycles get divided up among the users. The more cycles the computer spends working on your program rather than someone else's, the faster your program will run. That's why every hacker wants more cycles: so he can spend less time waiting for the computer to respond.

The use of the term "cycle" for a computer clock period can probably be traced back to the rotation of a generator generating alternating current though computers generally use a clock signal which is more like a square wave. Interestingly, the earliest mechanical calculators, e.g. Babbage's difference engine, really did have parts which rotated in true cycles.

[jargon file]

Thesaurus Terms
 Related Terms: absorption current, AC, active current, aeon, AF, age, alternate, alternating current, ambit, annular muscle, annulus, annus magnus, areola, array, arsis, articulation, atomic cluster, audio frequency, aureole, bank, be here again, beat, benzene ring, bicycle, bicycle-built-for-two, bike, bout, branched chain, bus, buzz, carrier frequency, catch a train, catena, catenation, chain, chain reaction, chaining, chaplet, chauffeur, chopper, circle, circuit, circuiteer, circulate, circumambulate, circumference, circummigrate, circumnavigate, circumvent, circus, close the circle, closed chain, closed circle, come again, come and go, come around, come full circle, come round, come round again, come up again, compass, compound radical, concatenation, conduction current, connection, consecution, continuum, convection current, corona, coronet, course, CPS, crown, cycle of indiction, cycles, date, day, DC, delta current, descent, describe a circle, diadem, diastole, dielectric displacement current, direct current, discus, disk, displacement current, downbeat, drive, drone, eddy current, EHF, electric current, electric stream, emission current, encircle, encompass, endless belt, endless round, entrain, eternal return, exciting current, extremely high frequency, fairy ring, file, filiation, flank, free alternating current, frequency, frequency spectrum, full circle, galvanic current, gamut, garland, generation, girdle, girdle the globe, glory, go about, go around, go by rail, go round, go the round, gradation, great year, gyre, halo, hertz, heterocycle, HF, high frequency, high-frequency current, homocycle, hum, Hz, idle current, Indian file, indiction, induced current, induction current, intermediate frequency, intermit, ionization current, iron, joyride, juice, Kekule formula, kilocycles, kilohertz, lap, lasso, lattice, line, lineage, logical circle, loop, looplet, low frequency, lower frequencies, low-frequency current, magic circle, magnetizing current, make a circuit, make a train, medium frequency, megacycles, megahertz, MF, minibike, molecule, monocycle, monotone, motocycle, motor, motorbike, motorcycle, multiphase current, nexus, noose, O, orbit, oscillate, pattern, pedal, pedicab, pendulum, periodicity, pig, Platonic year, plenum, powder train, progression, pulsate, pulsating direct current, pulse, queue, radical, radio frequency, radius, range, rank, reactive current, reappear, recur, recurrence, recycle, reoccur, repeat, reticulation, return, revolution, revolve, RF, ride, ring, road-bike, roll around, rondelle, rotary current, rotate, rotation, round, round trip, roundel, rounds, routine, row, run, saucer, scale, scooter, sequel, sequence, series, SHF, side chain, sidewalk bike, simple radical, single file, single-phase alternating current, skirt, space-lattice, spark frequency, spectrum, spell, sphincter, spiral, straight chain, stray current, string, succession, superhigh frequency, surround, swath, systole, take a joyride, tandem, taxi, thermionic current, thermoelectric current, thesis, thread, three-phase alternating current, tier, time, tour, trail bike, train, tricycle, trike, turn, two-wheeler, UHF, ultrahigh frequency, undulate, upbeat, upper frequencies, velocipede, very high frequency, very low frequency, VHF, vicious circle, VLF, voltaic current, walk, watt current, wheel, wheel around, windrow, wreath