Where does “interarm” come from?

interarm (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.

interarm (English): Between arms of a spiral galaxy; Between arms

Definitions

  1. Between arms of a spiral galaxy; Between arms

Ancestry of “interarm”, step by step

interarm 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 Arm

StepLanguageWordMeaning
1EnglishArmAbbreviation of Armenian
2Middle Englisharmarm; poor; miserable, wretched
3Old Englishearmarm; poor, miserable
4Proto-West Germanicarmarm; poor, miserable; pitiful, pitiable
5Proto-Germanicarmazarm; poor, miserable; pitiful, pitiable
6Proto-Indo-Europeanh₂ermos
7Proto-Indo-Europeanh₂er-to fit, to fix, to put together
Every word from Proto-Indo-European -terosEvery word from Proto-Indo-European h₁énterosEvery word from Latin interus