Where does “cysteic” come from?

cysteic (English) comes from English cysteine, from English cystine, from Ancient Greek κύστις, from Proto-Indo-European (s)kewH- — to cover, bedeck; cover.

cysteic (English): relating to cysteic acid or its derivatives

Definitions

  1. relating to cysteic acid or its derivatives

Ancestry of “cysteic”, step by step

cysteic traces back through two separate lines of ancestry.

via English cysteine

StepLanguageWordMeaning
1EnglishcysteineA sulphur-containing nonessential amino acid...
2EnglishcystineA nonessential amino acid formed by the oxidation...
3Ancient Greekκύστιςbladder
4Proto-Indo-European(s)kewH-to cover, bedeck; cover

via English ic

StepLanguageWordMeaning
1Englishicrelated or pertaining to; having the character of
Every word from Proto-Indo-European (s)kewH-