English

interlineage

From inter- + lineage.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Proto-Italic *līnom

…

Latin līneus ‘flaxen’

Latin linea ‘line’

Old French linage

Middle English linage

Today it means

adj Between lineages

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

Etymograph / interlineage