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  • agar
    agar
    noun
    Also agar-agar. 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.
  • Agar
    Agar
    noun

agar

1 American  
[ah-gahr, ag-er] / ˈɑ gɑr, ˈæg ər /

noun

  1. Also called Japanese isinglass.  Also called Japanese gelatin.  Also called Chinese gelatin.  Also called Chinese isinglass.  Also agar-agar. 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.

  2. Biology. a culture medium having an agar base.


Agar 2 American  
[ey-gahr] / ˈeɪ gɑr /

noun

Douay Bible.
  1. Hagar.


agar British  
/ ˈeɪɡə /

noun

  1. Also called: 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

"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

agar Scientific  
/ āgär′,ägär′ /
  1. 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.


Etymology

Origin of agar

First recorded in 1885–90, agar is from the Malay word agaragar seaweed from which a gelatin is rendered, or the gelatin itself

Vocabulary lists containing agar

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

As a result, Yingchao has been visiting the Agar Children's Centre's stay-and-play sessions with her now three-month-old baby.

From BBC • Mar. 19, 2026

"I just walked down the wicket to celebrate," says Agar.

From BBC • Nov. 18, 2025

After two games in the Sheffield Shield, Agar came within a whisker of making his Australia bow on an awful tour of India.

From BBC • Nov. 18, 2025

"It was huge because it was so unexpected," Agar says.

From BBC • Nov. 18, 2025

In the evening, Mother called Dr. Agar, our family doctor.

From "The Lions of Little Rock" by Kristin Levine