English
kilocycle
From kilo- + cycle.
Proto-Indo-European *ǵʰes- ‘hand’
Proto-Indo-European *ǵʰesliyoy
Proto-Hellenic *kʰehliyoi ‘thousand’
Ancient Greek χίλιοι ‘one thousand’
English kilo-
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 A thousand cycles (of any periodic phenomenon).
Language periods are conventional ranges, not dates for this word.
Etymograph / kilocycle