blue-green algae

A form of blue-green alga — Any member of the taxonomic class or phylum Cyanobacteria; a primitive photosynthetic organism similar to bacteria which is thought to have generated the first oxygen in the Earth's atmosphere.

Similar
cyanobacteria
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Meanings

noun
  1. pluralplural of blue-green alga

Synonyms & antonyms

nounpredominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton

Similar
cyanobacteria
Broader
eubacteriaeubacteriumtrue bacteria

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

blue-green algae. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/blue-green%20algae

MLA

“blue-green algae.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/blue-green%20algae. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “blue-green algae,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/blue-green%20algae.

Source: blue-green algae on Wiktionary, CC BY-SA 4.0.