alginic acidal·gin·ic acid
a gelatinous material, (CHO), extracted from brown seaweed or kelp: used in jellies, plastics, dentistry, etc.
Origin of alginic acidalgin + -ic
An insoluble colloidal acid in the form of a carboxylated polysaccharide that is abundant in the cell walls of brown algae.
(plural alginic acids)