English

interquarter

From inter- + quarter.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *kʷetwr̥tós

…

Latin quartus ‘fourth’

Latin quartarius ‘a quarter measure’

Anglo-Norman quarter

Middle English quarter

Today it means

adj Between quarters.

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

Etymograph / interquarter