Share this entry

protozoan Syllabification: pro·to·zo·an
Pronunciation: /ˌprōdəˈzōən/

Definition of protozoan in English:


A single-celled microscopic animal of a group of phyla of the kingdom Protista, such as an amoeba, flagellate, ciliate, or sporozoan.
Example sentences
  • I devoured photographs showing the ghostly glow of bacteria on decaying fish: the shimmering phosphorescence of protozoans in tropical seas.
  • They have been considered animals, protozoans, fungi or space aliens.
  • Schindler says more of a problem are the protozoans that originate from livestock.


Back to top  
Relating to or denoting protozoans.
Example sentences
  • Less critical than refugia, prey switching also plays a role in protozoan persistence.
  • Malaria is an example of a disease caused by a vector-borne protozoan parasite.
  • The contact time with the iodine in the filter may be too short to kill protozoan cysts, however.



Example sentences
  • I test these hypotheses experimentally in a host-parasite system involving wild turkeys and their deleterious, intestinal protozoal parasites, the eimerian coccidia (Apicomplexa: Eimeriidae).
  • The United States Department of Agriculture has issued a conditional license for the production of a vaccine that could prevent equine protozoal myeloencephalitis.
  • The 15-year-old missed about a month earlier this spring following the detection of arthritis at the base of his neck and a possible case of equine protozoal myeloencephalitis.


Pronunciation: /ˌprōdəˈzōik/
Example sentences
  • None of you realise it yet, but this is an advance as big as the step the first ichthyoid took out of the protozoic sea 300 million years ago.


Pronunciation: /ˌprōdəˈzōˌän/
Example sentences
  • The protozoon has a characteristic teardrop shape, measures 10 to 15 mm in length and is characterized by twin nuclei and an adhesive disk that is a rigid structure reinforced by supelicular microtubules.
  • When the parasite protozoon or single-celled animal invades the body, rather than just the skin or lining of body cavities (mucous membranes) it is called visceral Leishmaniasis.
  • The word ‘evolution’ generally conveys the meaning of the sort of change which will ultimately be able to convert a protozoon into a man or a reptile into a bird, and so on.

Words that rhyme with protozoan

anthozoan, bryozoan, Goan, hydrozoan, Minoan, protozoon, rowan, Samoan, spermatozoon

Definition of protozoan in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day haughty
Pronunciation: ˈhôdē
arrogantly superior and disdainful