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blue-green algae
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Noun blue-green algae has 1 sense
  1. cyanobacteria, blue-green algae - predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton
    --1 is a kind of eubacteria, eubacterium, true bacteria
    --1 is a member of class Cyanobacteria, Cyanophyceae, class Cyanophyceae
    --1 has particulars: nostoc; trichodesmium
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