Word.ws English Dictionary

Plural of cyanobacterium

irregular plural

The plural of cyanobacterium is cyanobacteria.

Forms of cyanobacterium

Singularcyanobacterium
Pluralcyanobacteria
Countablecountable

Cyanobacteria in a sentence

  • At some point in the first billion years of life, cyanobacteria, or blue-green algae, learned to tap into a freely available resource – the hydrogen that exists in spectacular abundance in water.2003, Bill Bryson, A Short History of Nearly Everything, BCA, published 2003, page 262
  • Photosynthesis was established some billion years ago by ancient bacterial precursors of modern cyanobacteria.2011, Terence Allen, Graham Cowling, The Cell: A Very Short Introduction, Oxford, page 91
  • The cyanobacteria grow filaments that are surrounded by a sticky gel-like sheath.[2021, Jaco J. Hamman, Just Traveling: God, Leaving Home, and a Spirituality for the Road, Fortress Press, →ISBN, page 68. From the entry desert glue
  • The benthic microflora of marine sands includes bacteria, blue-green bacteria (cyanobacteria), autotrophic flagellates, and diatoms.2017, Anton McLachlan, Omar Defeo, The Ecology of Sandy Shores, Academic Press, →ISBN, page 63. From the entry epipsammon
  • Cryptobiotic crusts, also called desert glue, are cyanobacteria that grow hidden on the surface of the desert sand.[2021, Jaco J. Hamman, Just Traveling: God, Leaving Home, and a Spirituality for the Road, Fortress Press, →ISBN, page 68. From the entry desert glue

Meaning of cyanobacterium

  1. noun Any of very many photosynthetic prokaryotic microorganisms, of phylum Cyanobacteria.

Full definition of cyanobacterium

Nouns ending in -um: plural -a

Questions about the plural of cyanobacterium

What is the plural of cyanobacterium?
The plural of cyanobacterium is cyanobacteria.
Is cyanobacterium countable?
Cyanobacterium is a countable noun.

Source and license

Adapted from Wiktionary: cyanobacterium (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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