- a widely distributed group of predominantly photosynthetic prokaryotic organisms of the subkingdom Cyanophyta, resembling phototrophic bacteria, occurring singly or in colonies in diverse habitats: some species can fix atmospheric nitrogen.
Origin of blue-green algae
First recorded in 1895–1900
Also called cyanobacteria.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the former name for cyanobacteria
- See under cyanobacterium.
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