roundworm

American

[round-wurm] / ˈraʊndˌwɜrm /

noun

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

roundworm British

/ ˈraʊndˌwɜːm /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of roundworm

First recorded in 1555–65; round ¹ + worm

Compare meaning

How does roundworm compare to similar and commonly confused words? Explore the most common comparisons:

flatworm vs. roundworm

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023