1. cyanobacteria

noun. predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton.


  • class Cyanophyceae
  • eubacteria
  • Cyanophyceae
  • eubacterium
  • trichodesmium
  • class Cyanobacteria
  • nostoc
  • blue-green algae

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Sentences with cyanobacteria

1. Noun, plural
Sunlight drives photosynthesis in primary producers, such as cyanobacteria and plants, which rest at the base of the food chain.

2. Noun, singular or mass
These visible colonies of cyanobacteria or microalgae may be present in a variety of colors such as red, blue, green, brown, yellow or orange.