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[ah-gahr, ag-er] /ˈɑ gɑr, ˈæg ər/
Also, agar-agar. Also called Chinese gelatin, Chinese isinglass, Japanese gelatin, Japanese isinglass. a gelatinlike product of certain seaweeds, used for solidifying certain culture media, as a thickening agent for ice cream and other foods, as a substitute for gelatin, in adhesives, as an emulsifier, etc.
Biology. a culture medium having an agar base.
Origin of agar
1885-90; < Malay agaragar seaweed from which a gelatin is rendered, or the gelatin itself Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for agar-agar


a complex gelatinous carbohydrate obtained from seaweeds, esp those of the genus Gelidium, used as a culture medium for bacteria, a laxative, in food such as ice cream as a thickening agent (E406), etc Also called agar-agar
Word Origin
C19: Malay
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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agar-agar in Medicine

agar a·gar (ā'gär', ä'gär') or a·gar-a·gar (ā'gär-ā'gär', ä'gär-ä'-)

  1. A gelatinous material derived from marine algae, used as a base for bacterial culture media and as a stabilizer and thickener in food.

  2. A culture medium containing this material.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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agar-agar in Science
  (ā'gär', ä'gär')   
A gelatinous material obtained from marine algae, especially seaweed, used as a medium for growing bacterial cultures in the laboratory and as a thickener and stabilizer in food products.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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