cy·​a·​no·​bac·​te·​ri·​um | \ ˌsī-ə-nō-bak-ˈtir-ē-əm How to pronounce cyanobacterium (audio) , sī-ˌa-nō-\

Definition of cyanobacterium

: any of a major group (Cyanobacteria) of photosynthetic bacteria that are single-celled but often form colonies in the form of filaments, sheets, or spheres and are found in diverse environments (such as salt and fresh water, soils, and on rocks)

Note: Like other bacteria, cyanobacteria lack a nuclear membrane and membrane-bound organelles and have cell walls containing peptidoglycan. However, cyanobacteria were more commonly grouped with algae in the past because they possess a type of chlorophyll (chlorophyll a) not found in other bacteria and because they produce oxygen as a by-product of photosynthesis.

called also blue-green alga

Other Words from cyanobacterium

cyanobacterial \ ˌsī-​ə-​nō-​bak-​ˈtir-​ē-​əl How to pronounce cyanobacterial (audio) , sī-​ˌa-​nō-​ \ adjective

First Known Use of cyanobacterium

1974, in the meaning defined above

History and Etymology for cyanobacterium

New Latin

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The first known use of cyanobacterium was in 1974

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cy·​a·​no·​bac·​te·​ri·​um | \ -bak-ˈtir-ē-əm How to pronounce cyanobacterium (audio) \
plural cyanobacteria\ -​ē-​ə \

Medical Definition of cyanobacterium

: any of a major group (Cyanobacteria) of photosynthetic bacteria that produce molecular oxygen and use water as an electron-donating substrate in photosynthesis

called also blue-green alga

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