Where does “intra-” come from?

intra- (French) comes from Latin intra, from Latin interus, from Proto-Indo-European h₁énteros, from Proto-Indo-European -teros — Contrastive or oppositional adjectival suffix.

intra- (French): intra- (prefix indicating inside, within, interior)

Definitions

  1. intra- (prefix indicating inside, within, interior)

Ancestry of “intra-”, step by step

StepLanguageWordMeaning
1Latinintrawithin; inside; during; less than
2Latininterus
3Proto-Indo-Europeanh₁énterosinside, within
4Proto-Indo-European-terosContrastive or oppositional adjectival suffix

Words derived from “intra-

Every word from Proto-Indo-European -terosEvery word from Proto-Indo-European h₁énterosEvery word from Latin interus