alga
noun
al·​ga
| \ ˈal-gə
\
\
plural algae\ ˈal-​(ˌ)jē
\
also algas
\
also algas
Definition of alga
: a plant or plantlike organism of any of several phyla, divisions, or classes of chiefly aquatic usually chlorophyll-containing nonvascular organisms of polyphyletic origin that usually include the green, yellow-green, brown, and red algae in the eukaryotes and especially formerly the cyanobacteria in the prokaryotes
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Other Words from alga
algal
\ -​gəl
\
adjective
\
adjective
Examples of alga in a Sentence
Recent Examples on the Web
In Florida and Texas, red tides are caused by an alga called Karenia brevis. — Tom Metcalfe, NBC News, "What is red tide?," 13 July 2019 Studies of Volvox, an alga that forms beautiful, flagellated green balls, shows that multicellular organisms also found new ways to use existing functions. — Elizabeth Pennisi, Science | AAAS, "The momentous transition to multicellular life may not have been so hard after all," 28 June 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'alga.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for alga
alga
noun
al·​ga
| \ ˈal-gə
\
\
plural algae\ ˈal-​ˌjē \
Kids Definition of alga
: any of a large group of simple plants and plant-like organisms (as a seaweed) that usually grow in water and produce chlorophyll like plants but do not produce seeds
alga
noun
al·​ga
| \ ˈal-gə
\
\
plural algae\ ˈal-​(ˌ)jē
\
also algas
\
also algas
Medical Definition of alga
: a plant or plantlike organism of any of several phyla, divisions, or classes of chiefly aquatic usually chlorophyll-containing nonvascular organisms of polyphyletic origin that usually include the green, yellow-green, brown, and red algae in the eukaryotes and especially formerly included the cyanobacteria in the prokaryotes
Other Words from alga
algal
\ -​gəl
\
adjective
\
adjective
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