blue-green alga

Noun

 * 1) 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.

Usage notes

 * The term alga is now considered improper scientific usage, since true algae are eukaryotic organisms, rather than bacteria. It remains in common use among aquarists and others, however.

Synonyms

 * , BGA

Hypernyms

 * alga, bacterium

Translations

 * Czech:
 * Dutch:
 * Finnish: sinibakteeri, sinilevä, syanobakteeri
 * French: algue bleu-vert
 * Greek: κυανοφύκη
 * Italian: