Definition of Protozoa in English:


Pronunciation /ˌprōdəˈzōə/ /ˌproʊdəˈzoʊə/

plural noun

  • 1Zoology
    A phylum or group of phyla that comprises the single-celled microscopic animals, which include amoebas, flagellates, ciliates, sporozoans, and many other forms. They are now usually treated as a number of phyla belonging to the kingdom Protista.

    ‘The first edition's chapter on Protozoa recognized 7 phyla.’
    ‘This view is based on the early idea that sponges are grouped with the Protozoa.’
    1. 1.1Organisms of the Protozoa group.
      • ‘Instead, higher decomposition of organic matter might lead to higher populations of bacteria, protozoa, and organisms using these as food supply, which in turn can be consumed by zooplankton.’
      • ‘Microbiological contaminants, including protozoa, bacteria and viruses, are normally killed by chlorinating and other treatment.’
      • ‘From 6 to 26 nucleotide repeats have been identified in the chromosomal ends of Protozoa, fungi, nematodes, plants, and vertebrates.’
      • ‘Most amoebae strains were obtained from the Culture Collection of Algae and Protozoa (Windermere, United Kingdom).’
      • ‘What was decided among the prehistoric Protozoa cannot be annulled by Act of Parliament…’


Modern Latin (plural), from proto-‘first’ + Greek zōion ‘animal’.



/ˌprōdəˈzōə/ /ˌproʊdəˈzoʊə/