Where does “sulphomucin” come from?

sulphomucin (English) comes from English mucin, from English in, from Middle English in, from Old English in, from Proto-West Germanic *in.

Ancestry of “sulphomucin”, step by step

StepLanguageWordMeaning
1EnglishmucinAny of several glycoproteins found in mucus
2EnglishinUsed to indicate location, inclusion, or position...
3Middle EnglishinAny kind of accomodation; particularly; A home or...
4Old Englishinin; Alternative form of inn
5Proto-West Germanic*in—
Every word from Proto-West Germanic *in →Every word from Old English in →Every word from Middle English in →