English

intratubular

From intra- + tubular.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁énteros ‘inside, within’

Latin *interus

Latin intrā ‘within’

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

Latin tubus ‘trumpet used at sacrifices’

Latin tubulus ‘diminutive of tubus’

Today it means

adj Within a tubule.

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

Etymograph / intratubular