Nematoda

[ nĕm′ə-tō′də ]

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.

Examples from the Web for nematoda

The male has two spicules, and there is some doubt as to whether it should be placed with the Desmoscolecida or with the Nematoda.
Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 2|Various
The form of the lumen, as already pointed out by Grube, resembles that of the Nematoda.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
Those that are usually dwelt on are treated with the Rotifers and Nematoda and Turbellaria.
Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5|Various
New avian and insect hosts for Gongylonema ingluvicola (Nematoda: Spiruridae).
The Biotic Associations of Cockroaches|Louis M. Roth

In the Nematoda the generative organs are derived from the division of a single cell which would appear to be mesoblastic.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour