English

isogyre

From iso- + gyre.

Formed from iso- + gyre

Ancient Greek ἴσος ‘equal’

English iso-

Proto-Indo-European *gew- ‘to bend’

Ancient Greek γῦρος ‘circle’

Latin gȳrus ‘circle’

English gyre

Today it means

noun Dark bands appearing in a conoscopic interference pattern.

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