Where does “белковый” come from?

белковый (Russian) comes from Russian бело́к, from Proto-Slavic bělъkъ, from Proto-Slavic -ъkъ, from Proto-Slavic -kъ, from Proto-Indo-European -kos — Creates deadjectival and desubstantival...

белковый (Russian): egg-white, albumen; albuminous; protein

Definitions

  1. egg-white, albumen; albuminous; protein

Ancestry of “белковый”, step by step

StepLanguageWordMeaning
1Russianбело́кegg-white, albumen
2Proto-Slavicbělъkъalbumen; sclera?
3Proto-Slavic-ъkъForms diminutives from old u-stem nouns;...
4Proto-Slavic-kъDeverbal, forms token nouns; From expressive or...
5Proto-Indo-European-kosCreates deadjectival and desubstantival...
Every word from Proto-Indo-European -kos →Every word from Proto-Slavic -kъ →Every word from Proto-Slavic -ъkъ →