roundworm

[round-wurm] /ˈraʊndˌwɜrm/

noun

any nematode, especially Ascaris lumbricoides, that infests the intestine of humans and other mammals.

Origin

1555-65; round¹ + worm

Examples from the web for roundworm

Tens of thousands of roundworm species are known, and the true number could be in the millions.
Common nematode parasites include roundworm and ringworm.
Ascariasis is caused by consuming food or drink contaminated with roundworm eggs.
Studying the nervous system of the roundworm is a promising approach for understanding the human brain.

British Dictionary definitions for roundworm

/ˈraʊndˌwɜːm/

noun

any nematode worm, esp Ascaris lumbricoides, a common intestinal parasite of man and pigs

roundworm in Medicine

roundworm round·worm (round'wûrm')
n.
See nematode.