Where does “interserotype” come from?

interserotype (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 “interserotype”, step by step

interserotype 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 serotype

StepLanguageWordMeaning
1EnglishserotypeA group of microorganisms characterised by a...
2EnglishtypeA grouping based on shared characteristics; a...
3Middle Englishtypesymbol, figure, emblem
4Latintypusfigure, image; type, form, sort, kind; form,...
5Ancient GreekτύποςA blow, pressing; The results of a blow: mark,...
6Ancient Greekτύπτωto beat, strike, smite; to beat, strike oneself
7Proto-Indo-European(s)tewp-to push, to stick
8Proto-Indo-European(s)tew-to push, to hit
Every word from Proto-Indo-European -teros