Protozoa > define

noun

• In some classifications considered a superphylum or a subkingdom; comprises flagellates; ciliates; sporozoans; amoebas; foraminifers.
  • synonyms: phylum Protozoa
• Any of diverse minute acellular or unicellular organisms usually nonphotosynthetic.
  • synonyms: protozoan, protozoon

• (n.pl.) The lowest of the grand divisions of the animal kingdom.
• (pl.) of Protozoon.