Noun class cyanophyceae has 1 sense
  1. class Cyanobacteria, Cyanophyceae, class Cyanophyceae - photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae
    --1 is a kind of class
    --1 is a member of Cyanophyta, division Cyanophyta
    --1 has members:
     cyanobacteria, blue-green algae; Nostocaceae, family Nostocaceae; Oscillatoriaceae, family Oscillatoriaceae
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