/ Dictionary / Index A alginic acid: Meaning and Definition of Find definitions for: al•gin'ic ac'id Pronunciation: (al-jin'ik), [key] — Chem. Chem. an insoluble, colloidal acid, (CHO), found in the cell walls of various kelps, esp. brown kelps, known chiefly in the form of its salts, and used as a thickening or stabilizing agent in foodstuffs, esp. ice cream, and for sizing paper. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. algin fiber algo- Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language