Where does “interpupil” come from?

interpupil (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.

interpupil (English): Between pupils

Definitions

  1. Between pupils

Ancestry of “interpupil”, step by step

interpupil 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 pupil

StepLanguageWordMeaning
1EnglishpupilA learner under the supervision of a teacher or...
2Middle Englishpupille
3Old Frenchpupilleorphan
4Latinpūpilla
5Latinpupulapupil; little lass
6Latinpupagirl, little girl; doll, puppet; pupa
7Latinpupusa boy, a child; a puppet; the pupil of the eye
8Proto-Indo-Europeanpeh₂w-few, little; smallness
Every word from Proto-Indo-European -teros