agar

noun
\ ˈä-gər How to pronounce agar (audio) \

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

Examples of agar in a Sentence

Recent Examples on the Web American anti-intellectualism provides a rich cultural agar for growing these theories. Elizabeth Williamson, Wired, 11 Mar. 2022 Glass explained that the square was a plate of agar on which colonies of the minimal cell had been grown. James Somers, The New Yorker, 28 Feb. 2022 Then, Baym added agar, which is both food and habitat for microbes. Rob Dunn, Wired, 6 Jan. 2022 And in some cases, as Torres noticed on his warm agar, bacterial counts plummeted. Max G. Levy, Wired, 30 Nov. 2021 So they can be put onto agar plates individually, giving the bacteria a better shot at growing there. Sarah Vitak, Scientific American, 10 Aug. 2021 Alexander Fleming, who discovered the antibiotic properties of penicillin on an agar plate in 1928, created images using live organisms. Meenakshi J, Smithsonian Magazine, 22 Mar. 2021 Goops from Fucellaria specifically are known as Danish agar. Leslie Nemo, Scientific American, 29 Mar. 2021 The other day, the whole lab had just 10 routine agar plates, used in screening for bacterial infections. Emma Court, Bloomberg.com, 1 Sep. 2020 See More

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.

First Known Use of agar

1885, in the meaning defined at sense 1

History and Etymology for agar

short for Malay agar-agar, name for the red alga from which it is extracted

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Statistics for agar

Last Updated

23 May 2022

Cite this Entry

“Agar.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/agar. Accessed 26 May. 2022.

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More Definitions for agar

agar

noun
\ ˈäg-ər How to pronounce agar (audio) \

Medical 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

More from Merriam-Webster on agar

Nglish: Translation of agar for Spanish Speakers

Britannica.com: Encyclopedia article about agar

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