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 (sī′ə-nō-băk-tîr′ē-əm, sī-ăn′ō-)
n. pl. cy·a·no·bac·te·ri·a (-tîr′ē-ə)
Any of various photosynthetic bacteria of the phylum Cyanobacteria that are generally blue-green in color and are widespread in marine and freshwater environments, with some species capable of nitrogen fixation. Also called blue-green alga, blue-green bacterium.


pl n, sing -rium (-rɪəm)
(Microbiology) a group of photosynthetic bacteria (phylum Cyanobacteria) containing a blue photosynthetic pigment. Former name: blue-green algae

blue′-green` al′gae
any of various groups of prokaryotic microorganisms of the phylum Cyanophyta, containing chlorophyll and a blue pigment. Also called cyanobacteria.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.cyanobacteria - predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyllcyanobacteria - predominantly photosynthetic prokaryotic organisms containing a blue pigment in addition to chlorophyll; occur singly or in colonies in diverse habitats; important as phytoplankton
eubacteria, eubacterium, true bacteria - a large group of bacteria having rigid cell walls; motile types have flagella
class Cyanobacteria, class Cyanophyceae, Cyanophyceae - photosynthetic bacteria found in fresh and salt water, having chlorophyll a and phycobilins; once thought to be algae: blue-green algae
nostoc - found in moist places as rounded jellylike colonies
trichodesmium - large colonial bacterium common in tropical open-ocean waters; important in carbon and nitrogen fixation
References in periodicals archive ?
Investigating the effect of methanol extract of Astaxanthin (Ast), Dunaliella salina (Dun), Spirulina platensis (Spir), and Aphanizomenon flos-aquae (AFA) cyanobacteria on hematopoietic and leukemia cell lines, Bechelli and his colleagues, showed that Ast and AFA have inhibitory effects on HL-60, MV-4-11 (human leukemia cell lines), and primary CLL cells [20].
The cyanophyta Aphanizomenon flos-aquae (AFA) is a fresh water unicellular blue-green alga that is consumed as a nutrient-dense food source and for its health-enhancing properties (Benedetti et al.
and Chief Science Officer Christian Drapeau, Stemtech began as a company with a single patented product, StemEnhance[R], a natural formula of concentrated aphanizomenon flos-aquae.
Chemical Studies on toxins from the blue-green alga Aphanizomenon flos-aquae.
Toxin producing cyanobacteria species identified included Anahaena flos-aquae, Aphanizomenon flos-aquae, Cylindrospermopsis raciborskii.