Where does “intersidereal” come from?

intersidereal (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.

intersidereal (English): Between or among constellations or stars;...

Definitions

  1. Between or among constellations or stars;...

Ancestry of “intersidereal”, step by step

intersidereal 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 sidereal

StepLanguageWordMeaning
1EnglishsiderealOf or relating to the stars; Relating to a...
2Latinsīdereusof, pertaining to, consisting of a stellar object objects
3Latinsīdus
4Ancient GreekΣιδοῦςSidus, Corinthia, Greece
5Ancient Greekσίδηpomegranate; kind of waterplant growing near...
Every word from Proto-Indo-European -terosEvery word from Proto-Indo-European h₁énterosEvery word from Latin interus