English

semiperiod

From semi- + period.

Proto-Indo-European *sem- ‘one’

Proto-Indo-European *sēmi ‘half’

English semi-

Ancient Greek περῐ́οδος ‘circuit, orbit, recurring interval of time’

Medieval Latin periodus

Middle French periode

Middle English periode

Today it means

noun —

Language periods are conventional ranges, not dates for this word.

Etymograph / semiperiod