agar - Dictionary definition and pronunciation - Yahoo! Education
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a·gar  audio  (gär, ägär) KEY  also a·gar-a·gar  (gär-gär, ägär-ä-) KEY 

NOUN:
  1. A gelatinous material derived from certain marine algae. It is used as a base for bacterial culture media and as a stabilizer and thickener in many food products.
  2. A culture medium containing this material.
ETYMOLOGY:
Short for Malay agar-agar


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