Where does “intercuspidal” come from?

intercuspidal (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.

intercuspidal (English): Between the cusps of the teeth

Definitions

  1. Between the cusps of the teeth

Ancestry of “intercuspidal”, step by step

intercuspidal 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 cuspidal

StepLanguageWordMeaning
1EnglishcuspidalHaving cusps
2Spanish-alIn adjectives, indicating relation; In nouns,...
3Latin-ālis
4Proto-Italic-ālisforms relational adjectives
Every word from Proto-Indo-European -terosEvery word from Proto-Indo-European h₁énterosEvery word from Latin interus
intercuspidal — Etymology, Origin & Word History | Etymology Explorer