Crossword clue: a colloidal extract of algae; used especially in culture media and as a gelling agent in foods

The most common answer is agar (4 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

agar 4 letters wn-def

a colloidal extract of algae; used especially in culture media and as a gelling agent in foods