Where does “alginic acid” come from?

alginic acid (English) comes from English acid, from French acide, from Latin acidus, from Latin aceō, from Proto-Italic akēō, from Proto-Indo-European h₂eḱ-éh₁-ye-ti, from Proto-Indo-European h₂eḱ- — sharp.

alginic acid (English): An insoluble colloidal acid (C6H8O6)n that in the form of its salts is a constituent of the cell walls of brown algae and is used as a food additive

Definitions

  1. An insoluble colloidal acid (C6H8O6)n that in the form of its salts is a constituent of the cell walls of brown algae and is used as a food additive

Ancestry of “alginic acid”, step by step

alginic acid traces back through two separate lines of ancestry.

via English acid

StepLanguageWordMeaning
1EnglishacidSour, sharp, or biting to the taste; tart; having...
2Frenchacideacid, acidic, sour, tart; acid, acidic; acid
3Latinacidussour, tart, acid, bitter; harsh, grating, rough,...
4Latinaceōto be sour
5Proto-Italicakēōbe sharp-tasting, be sour
6Proto-Indo-Europeanh₂eḱ-éh₁-ye-ti
7Proto-Indo-Europeanh₂eḱ-sharp

via English algin

StepLanguageWordMeaning
1EnglishalginAny of various gelatinous gums, derivatives of...
2English-ínAttached to a word (usually a verb) to denote a protest, demonstration or other type of gathering characterized by the activity denoted by the base word
3EnglishinUsed to indicate location, inclusion, or position...
4Middle EnglishinAny kind of accomodation; particularly; A home or...
5Old Englishinin; Alternative form of inn
6Proto-West Germanic*in

Words derived from “alginic acid

Every word from Proto-Indo-European h₂eḱ-Every word from Proto-Indo-European h₂eḱ-éh₁-ye-tiEvery word from Proto-Italic akēō
alginic acid — Etymology, Origin & Word History | Etymology Explorer