Plasmodium ovale

[ō-vālē]
n.
  1. A protozoan that is the agent of the least common form of human malaria, which is characterized by fimbriated red blood cells that often have an oval shape.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.