English

interangular

From inter- + angular.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Indo-European *h₂eng- ‘bend, curve’

…

Proto-Italic *angulos

Latin angulus ‘angle, corner’

Latin angulāris

Middle English angular

Today it means

adj Between angles

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

Etymograph / interangular