Unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic(noun)
WordNet. Princeton University. 2010.
Use "nematode worm" in a sentence
"To a leaf-dwelling nematode worm such as Aphelencoides, a single foxglove is an island."
"Although what he had noticed on this occasion was only the vivifying of a type of nematode worm deposited originally in a dry and motionless state within the “flower” of certain grains, Needham's later memoir (“Observations upon the Generation, Com - position, and Decomposition of Animal and Vegetable"