Where does “interrhombomeric” come from?

interrhombomeric (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.

Ancestry of “interrhombomeric”, step by step

interrhombomeric 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 rhombomeric

StepLanguageWordMeaning
1EnglishrhombomericRelating to a rhombomere
2EnglishrhombomereA temporarily divided segment of the developing...
3EnglishmereA body of standing water, such as a lake or a...
4Middle Englishmeremare; mother; sea, lake
5Old Englishmerelake; pool; sea
6Old Englishbyriġ
7Old EnglishburhAlternative form of burg; fortress; hill
8Old Englishburgcity; town; a fortified place: stronghold, fort,...
9Proto-Germanicburgzfortification, stronghold; city
10Proto-Indo-Europeanbʰr̥ǵʰ-
Every word from Proto-Indo-European -terosEvery word from Proto-Indo-European h₁énterosEvery word from Latin interus