English

interpupillary

From inter- + pupillary.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Latin pūpillus ‘orphan, ward’

Latin pūpillāris ‘of an orphan, of a ward, orphan-, ward-’

Today it means

adj Between the pupils of the eyes.

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

Etymograph / interpupillary