English

invitro

Blend of invite + intro.

Latin invītō ‘to invite, summon’

Middle French inviter ‘to invite’

Proto-Indo-European *h₁en ‘in’

Proto-Indo-European *h₁énteros ‘inner, what is inside’

Latin intrōductiō ‘lead-in, introduction’

English intro

Today it means

noun An intro that provides details of a forthcoming demoparty to which viewers are invited.

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