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Definition of Alginate
1. a chemical salt [n -S]
Medical Definition of Alginate
1. Salts of alginic acid, a hydrophilic colloidal carbohydrate which is extracted from the cell walls of marine kelp (algae). Calcium, sodium, and ammonium alginates have been used as foam, clot, or gauze for absorbable surgical dressings. Soluble alginates, such as sodium, potassium, and magnesium alginates, form a viscous gel. (12 Dec 1998)