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Definition of agar
1 : a gelatinous colloidal extract of a red alga (as of the genera Gelidium, Gracilaria, and Eucheuma) used especially in culture media or as a gelling and stabilizing agent in foods
2 : a culture medium containing agar
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Recent Examples of agar from the Web
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This gelatin substitute uses agar-agar, a product made from a seaweed that has gelling properties and is often used in Southeast Asian desserts.
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There will be a diorama lined with tile and containing sculptures coated with agar, a gelatinous substance that supports the growth of bacteria gathered in Manhattan’s Chinatown and Koreatown.
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Infrared thermometers are useful in biology labs like Plank and Dombrowski’s, where sticking a conventional thermometer into an agar plate or a water bath would contaminate biological samples.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'agar'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of agar
Malay agar-agar
Medical Dictionary
agar
playMedical Definition of agar
1: a gelatinous colloidal extract of a red alga (as of the genera Gelidium, Gracilaria, and Eucheuma) used especially in culture media or as a gelling and stabilizing agent in foods
2: a culture medium containing agar
Learn More about agar
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See words that rhyme with agar Nglish: Translation of agar for Spanish speakers Britannica.com: Encyclopedia article about agar
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