Nematoda

[ nĕm′ə-tōdə ]

n.

A phylum of worms including species parasitic in humans and plants as well as free-living nonparasitic species in soil or water. It includes the intestinal roundworms and filarial roundworms.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Examples from the Web for nematoda