Definitions

1. noun

a large intestinal roundworm (Toxocara pisiformis) found in dogs, and also the common roundworm (Ascaris lumbricoides) found in humans, typically acquired by ingesting contaminated food or water

“The doctor prescribed medication to treat the child’s ascaris infestation.”

2. noun

any of various species of roundworms belonging to the genus Ascaris

“The parasite expert studied the morphology of various ascaris species.”