Where does “interpenetrable” come from?

interpenetrable (English) comes from English inter, from Middle English enteren, from French entrer, from Middle French entrer, from Old French entrer, from Latin intrō, from Latin intra, from Latin interus — Contrastive or oppositional adjectival suffix.

interpenetrable (English): That can be interpenetrated

Definitions

  1. That can be interpenetrated

Ancestry of “interpenetrable”, step by step

interpenetrable traces back through two separate lines of ancestry.

via English inter

StepLanguageWordMeaning
1EnglishinterTo bury in a grave; To confine, as in a prison
2Middle Englishenteren
3Frenchentrerto enter
4Middle Frenchentrerto enter
5Old Frenchentrerto enter
6Latinintrōto enter, go into, come in, get in, penetrate
7Latinintrawithin; inside; during; less than
8Latininterus
9Proto-Indo-Europeanh₁énterosinside, within
10Proto-Indo-European-terosContrastive or oppositional adjectival suffix

via English penetrable

StepLanguageWordMeaning
1EnglishpenetrableCapable of being penetrated, entered, or pierced....
2Middle Englishpenetrable
3Old Frenchpenetrable
4Medieval Latinpenetrabilispenetrable; piercing
5LatinpenetroI enter; I penetrate
6LatinpenesUnder one's government or command; In one's...
7Proto-Italicpenets
8Proto-Indo-Europeanpen-et-sfood
9Proto-Indo-Europeanpen-bog, mire; moist; wet; mud; swamp; water; mire,...
Every word from Proto-Indo-European -terosEvery word from Proto-Indo-European h₁énterosEvery word from Latin interus