Definitions for: Cycle


[n] a shortened version of `bicycle' or `tricycle' or `motorcycle'
[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; "a cycle of reprisal and retaliation"
[n] a series of poems or songs on the same theme; "schubert's song cycles"
[n] the unit of frequency; one Hertz has a periodic interval of one second
[n] an interval during which a recurring sequence of events occurs; "the neverending cycle of the seasons"
[v] recur in cycles
[v] ride a bicycle
[v] ride a motorcycle
[v] pass through a cycle; "This machine automatically cycles"
[v] cause to go through a cycle



Webster (1913) Definition: 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.
--Tennyson.

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
Chaldeans.



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.


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.


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.

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

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