- any unsegmented worm of the phylum Nematoda, having an elongated, cylindrical body; a roundworm.
- pertaining to the Nematoda.
Origin of nematode
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for nematode
A recharacterization of the nematode genus Blatticola Schwenk, 1926.
On a new species of nematode, Gongylonema orientale, found in Formosa.
The Trichina is a nematode worm, and not an insect, as it was at first called.
Heterodera Schachtii is the name given to a nematode which Mons.
I have also two species of nematode from Macropus giganteus.Parasites
T. Spencer Cobbold
- any unsegmented worm of the phylum (or class) Nematoda, having a tough outer cuticle. The group includes free-living forms and disease-causing parasites, such as the hookworm and filariaAlso called: nematode worm, roundworm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for nematode
1865, from Modern Latin Nematoda, the class or phylum name.
Online Etymology Dictionary, © 2010 Douglas Harper
- A parasitic worm of the class Nematoda.roundworm
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- Any of several slender, cylindrical worms of the group Nematoda, which some scientists consider to be a class of the aschelminths and others to be a separate phylum. Most nematodes are tiny and live in enormous numbers in water, soil, plants, and animals. They have a simple structure, with a long hollow gut separated from the body wall by a fluid-filled space. Several nematodes, such as pinworm, roundworm, filaria, and hookworm, are parasites on animals and humans and cause disease. One species, Caenorhabditis elegans (usually called C. elegans), was one of the first animals to have its entire genome sequenced and is important in biological research as a model organism.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.