blue-green algae: Meaning and Definition of

blue'-green al'gae

Pronunciation: [key]
— Biol. Biol.
  1. 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. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.