English

intertubular

From inter- + tubular.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Latin tuba ‘long trumpet over 1 meter in length,…’

Latin tubus ‘trumpet used at sacrifices’

Latin tubulus ‘diminutive of tubus’

Today it means

adj Between tubes or tubules.

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

Etymograph / intertubular