my·​ia·​sis mī-ˈī-ə-səs How to pronounce myiasis (audio)
plural myiases mī-ˈī-ə-ˌsēz How to pronounce myiasis (audio)
: infestation with fly maggots

Example Sentences

Recent Examples on the Web And that’s a common enough problem that there’s a medical term for maggot infestation: myiasis, reported throughout human history, including in the eyes and rectum. National Geographic, 14 Feb. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'myiasis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


New Latin, from Greek myia fly — more at midge

First Known Use

1839, in the meaning defined above

Time Traveler
The first known use of myiasis was in 1839

Dictionary Entries Near myiasis

Cite this Entry

“Myiasis.” Dictionary, Merriam-Webster, Accessed 23 Mar. 2023.

Medical Definition


my·​ia·​sis mī-ˈī-ə-səs How to pronounce myiasis (audio) mē- How to pronounce myiasis (audio)
plural myiases -ˌsēz How to pronounce myiasis (audio)
: infestation with fly maggots

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