noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An invertebrate animal of the phylum Nematoda and other similar phyla. Many species of roundworms are parasites.
2. 2
   unsegmented worms with elongated rounded body pointed at both ends; mostly free-living but some are parasitic wordnet

Synonyms

All synonyms

nematodenematodelongwormnematode wormtinea

Example

More examples

"He had a roundworm in his stool the other day."

Etymology

From round + worm.

Related phrases

giant roundworm

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.