'class Cyanophyceae' definitions:

Definition of 'class Cyanophyceae'

(from WordNet)
noun
Photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae [syn: class Cyanobacteria, Cyanophyceae, class Cyanophyceae]