Word History

First Known Use

14th century, in the meaning defined above

Time Traveler
The first known use of ascaris was in the 14th century

Browse Nearby Words

Cite this Entry

“Ascaris.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ascaris. Accessed 7 Jul. 2026.

Medical Definition

ascaris

noun
1
capitalized : a genus of Ascarididae comprising nematode worms having a 3-lipped mouth, resembling earthworms in size and superficial appearance, and including one (A. lumbricoides) parasitic in the human intestine
2

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