green alga

plural green algae also green algas

Definition of green alga

: any of a division (Chlorophyta) of green-colored algae that have chloroplasts and occur especially in fresh water

Examples of green alga in a Sentence

Recent Examples on the Web The algae partner can be either a green alga or a blue-green alga, known as cyanobacteria. Howard Garrett, Dallas News, 17 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'green alga.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of green alga

1843, in the meaning defined above

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The first known use of green alga was in 1843

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Dictionary Entries Near green alga

green alder

green alga


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Cite this Entry

“Green alga.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2022.

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