Toxoplasma gondii

[tŏk′sə-plăzmə gŏndē-ī′]
n.
  1. A sporozoan species that is an intracellular parasite in a variety of vertebrates and is the causative agent of toxoplasmosis.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.