Nematode a. & n. : Same as Nematoid.

Example:
How does an earthworm's motion differ from that of a snake and Nematode?

Taxonomy
nematodes, roundworms, Subclass, parasitic, humans, phylum Nematoda, taxon, parasitic roundworms, systematics, phylum, animals, Ecdysozoa, root-knot nematodes, nema, parasitic nematodes, paraphyletic, nematode species, marine.

Defination from the web:
Nematode species are very difficult to distinguish; over 80,000 have been described, of which over 15,000 are parasitic. ... Some nematode species transmit plant viruses through their feeding activity on roots. ...