agar agar

substance used as a gelling and stabilizing agent in foods; a culture medium

Agar is a gelatinous substance chiefly used as a culture medium for microbiological work. It is an unbranched polysaccharide obtained from the cell walls of some species of red algae or seaweed. It can be used as a laxative, a vegetarian gelatin substitute, a thickener for soups, in jellies, ice cream and Japanese desserts such as anmitsu, as a clarifying agent in brewing, and for paper sizing fabrics. The word agar comes from the Malay word agar-agar (meaning jelly). It is also known as kanten or agal-agal (Ceylon agar). Chemically, agar is a polymer made up of subunits of the sugar galactose. Agar polysaccharides serve as the primary structural support for the algae's cell walls.
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Noun
1. a colloidal extract of algae; used especially in culture media and as a gelling agent in foods
(synonym) agar
(hypernym) gum
(substance-holonym) agar, nutrient agar

agar agar, substance used as a gelling and stabilizing agent in foods; a culture medium

n. agar agar, substance used as a gelling and stabilizing agent in foods; a culture medium