English
homocycle
From homo- + cycle.
Proto-Indo-European *sem- ‘one, whole’
Proto-Indo-European *somHós ‘same, alike’
Proto-Hellenic *homós
Ancient Greek ὁμός ‘same’
English homo-
Proto-Indo-European *kʷel- ‘to turn’
…
Proto-Hellenic *kúklos ‘circle, wheel’
Ancient Greek κύκλος ‘circle, ring’
Late Latin cyclus
Middle English cicle ‘fixed length period of years’
English cycle
Today it means
noun Any inorganic compound based on a ring of three or more atoms of the same element
Language periods are conventional ranges, not dates for this word.
Etymograph / homocycle