Webster's Revised Unabridged Dictionary · 1913

nematode

nematode , adjective

(Zoology) Same as Nematoid.

nematode , noun

(Zoology) Any worm of the phylum Nematoda; a roundworm; -- they are unsegmented worms having a cylindrical elongated body. They may live freely in soil or water, or as parasites in plants or animals.