Cycle of the sun
Cycle 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. [1913 Webster]

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. [1913 Webster]

Wages . . . bear a full proportion . . . to the medium of provision during the last bad cycle of twenty years. --Burke. [1913 Webster]

3. An age; a long period of time. [1913 Webster]

Better fifty years of Europe than a cycle of Cathay. --Tennyson. [1913 Webster]

4. An orderly list for a given time; a calendar. [Obs.] [1913 Webster]

We . . . present our gardeners with a complete cycle of what is requisite to be done throughout every month of the year. --Evelyn. [1913 Webster]

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. [1913 Webster]

6. (Bot.) One entire round in a circle or a spire; as, a cycle or set of leaves. --Gray. [1913 Webster]

7. A bicycle or tricycle, or other light velocipede. [1913 Webster]

8. A motorcycle. [PJC]

9. (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. [Webster 1913 Suppl.]

10. (Technology) 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. Hence: (Elec.) A complete positive and negative wave of an alternating current. The number of cycles (per second) is a measure of the frequency of an alternating current. [Webster 1913 Suppl. + PJC]

{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. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • cycle of the sun — or cycle of sundays Usage: usually capitalized Sundays : a period of 28 years at the end of which the days of the month according to the Julian calendar return to the same days of the week called also solar cycle …   Useful english dictionary

  • Cycle of the moon — Cycle 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. [1913 Webster] 2. An… …   The Collaborative International Dictionary of English

  • cycle of the Sunday letter — Cycle 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. [1913 Webster] 2. An… …   The Collaborative International Dictionary of English

  • Cycle of eclipses — Cycle 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. [1913 Webster] 2. An… …   The Collaborative International Dictionary of English

  • Cycle of indiction — Cycle 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. [1913 Webster] 2. An… …   The Collaborative International Dictionary of English

  • cycle of sundays — see cycle of the sun …   Useful english dictionary

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  • Cycle of eclipses — Eclipse E*clipse ([ e]*kl[i^]ps ), n. [F. [ e]clipse, L. eclipsis, fr. Gr. e kleipsis, prop., a forsaking, failing, fr. eklei pein to leave out, forsake; ek out + lei pein to leave. See {Ex }, and {Loan}.] 1. (Astron.) An interception or… …   The Collaborative International Dictionary of English

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