English

interunite

From inter- + unite.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *h₁óynos ‘one’

…

Latin ūnus ‘one, single’

Latin ūniō

Latin ūnītus ‘united’

Middle English uniten ‘to annex’

English unite

Today it means

verb To unite together; to undergo, or cause to undergo, interunion.

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

Etymograph / interunite