Where does “keratinous” come from?

keratinous (English) comes from English ous, from English ou, from Afrikaans ou, from Dutch oud, from Middle Dutch out, from Old Dutch ald, from Proto-West Germanic ald, from Proto-Germanic aldaz — to grow, nourish.

keratinous (English): Consisting of, or made from keratin

Definitions

  1. Consisting of, or made from keratin

Ancestry of “keratinous”, step by step

keratinous traces back through two separate lines of ancestry.

via English ous

StepLanguageWordMeaning
1Englishousplural of ou
2EnglishouA probably extinct species of Hawaiian...
3AfrikaansouAn old fellow, guy, bloke; attributive form of...
4Dutchoudold
5Middle Dutchoutold
6Old Dutchald
7Proto-West Germanicaldold
8Proto-Germanicaldazold, grown up
9Proto-Indo-Europeanh₂eltós
10Proto-Indo-Europeanh₂él-to grow, nourish

via English keratin

StepLanguageWordMeaning
1EnglishkeratinThe protein of which hair and nails are composed
2GermanKeratinKeratin (protein that hair and nails are made of)
3Ancient Greekκέραςhorn; horn as a material, or anything made of...
4Proto-Hellenic*kérats

Words derived from “keratinous

Every word from Proto-Indo-European h₂él-Every word from Proto-Indo-European h₂eltósEvery word from Proto-Germanic aldaz