different between circumference vs epicycle
circumference
English
Etymology
From Latin circumferentia, from circum (“around”) + fer? (“I carry”).
Pronunciation
- (UK) enPR: sûrk?m'fr?ns, IPA(key): /s???k?m.f??ns/
- (US) enPR: sûrk?m'fr?ns, IPA(key): /s???k?m.f??ns/
- Rhymes: -?ns
Noun
circumference (plural circumferences)
- (geometry) The line that bounds a circle or other two-dimensional figure
- (geometry) The length of such a line
- (obsolete) The surface of a round or spherical object
- (graph theory) The length of the longest cycle of a graph
Synonyms
- (geometry): perimeter, umstroke
- (distance measured around any object): girth
- (distance measured around a race track): lap
Related terms
- diameter
- radius
- perimeter
Translations
Verb
circumference (third-person singular simple present circumferences, present participle circumferencing, simple past and past participle circumferenced)
- (obsolete, transitive) To include in a circular space; to bound.
circumference From the web:
- what circumference mean
- what circumference of a circle
- what circumference should my thighs be
- what circumference of the earth
- what circumference is considered wide calf
- what circumference is a 7 3/4 hat
- what circumference are wide calf boots
- what circumference of the ball in centimeters
epicycle
English
Etymology
From Latin epicyclus, from Ancient Greek ????????? (epíkuklos), from ??? (epí, “upon”) + ?????? (kúklos, “circle”).
Pronunciation
- (UK) IPA(key): /??p??sa?k?l/
Noun
epicycle (plural epicycles)
- (astronomy) A small circle whose centre is on the circumference of a larger circle; in Ptolemaic astronomy it was seen as the basis of revolution of the "seven planets", given a fixed central Earth.
- , Folio Society, 2006, vol.1, p.155:
- Is it not [Philosophie], that […] teacheth miserie, famine and sicknesse to laugh? Not by reason of some imaginarie Epicicles, but by naturall and palpable reasons.
- , Folio Society, 2006, vol.1, p.155:
- (mathematics) Any circle whose circumference rolls around that of another circle, thus creating a hypocycloid or epicycloid.
- (organic chemistry) A ring of atoms joining parts of an already cyclic compound
- (figuratively) An ad hoc complication added to a model to make it fit the known data
- 1978, The Journal of the Siam Society, volumes 66-67, page 152:
- If two chronicles seemed contradictory, instead of trying to choose between them, a rationalization (epicycle) was devised to cover both.
- 1998, Paul Joseph Kelly, Impartiality, Neutrality and Justice: Re-reading Brian Barry’s Justice as Impartiality, page 12:
- Rather than solve the theoretical problem of how to produce a method of political ethics, the contractarian device introduces an unnecessary theoretical epicycle into what is otherwise a coherent account of social justice in particular and political morality in general.
- 1978, The Journal of the Siam Society, volumes 66-67, page 152:
Derived terms
- epicyclic
Translations
epicycle From the web:
- what epicycle meaning
- what are epicycles in astronomy
- what does epicycle mean
- what were epicycles used to describe
- what is epicycle model
- what does epicycle mean in astronomy
- what are epicycle used for
- what did epicycles explain
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