Definition

Noun: 1. A taxonomic class of parasitic protozoans: A class within the phylum Apicomplexa, comprising strictly parasitic, typically non-motile protozoans. These organisms are characterized by complex life cycles that often involve both sexual and asexual reproduction and the formation of spores. They include many significant parasites of humans and other animals.

Usage

• Scientific Classification: Used primarily in biological and zoological contexts to refer to this specific taxonomic group.
  • The malaria parasite, Plasmodium, belongs to the class Sporozoa.
  • Coccidia are members of the class Sporozoa that infect the intestinal tracts of animals.

Advanced Usage

• Historical Taxonomic Context: While "Sporozoa" was traditionally used as a class name, modern taxonomic revisions often place these organisms within the phylum Apicomplexa. The term "class Sporozoa" may be encountered in older literature or specific contexts.
  • In the older classification system, many apicomplexans were grouped under the class Sporozoa.

Variants and Related Words

• Sporozoan (noun): An individual organism belonging to the class Sporozoa.
  • The life cycle of a sporozoan is often very complex.
• Apicomplexan (noun): A member of the phylum Apicomplexa, which includes the organisms historically classified as Sporozoa. This is the more contemporary term.
  • Toxoplasma gondii is an important apicomplexan parasite.

Synonyms

• Apicomplexa (noun, at the phylum level): In modern taxonomy, this is the broader group encompassing the organisms once classified as Sporozoa.
• Sporozoans (noun, plural): A common informal term for organisms in this group.

Notes on Meaning

• The core meaning refers to a group of parasitic protozoans defined by their biological characteristics and life cycle. The term is specific to scientific discourse.

Noun

1. strictly parasitic protozoans that are usually immobile; includes plasmodia and coccidia and piroplasms and malaria parasites