house mouse


Definition of house mouse

: a common nearly cosmopolitan grayish-brown mouse (Mus musculus) that usually lives and breeds about buildings, may act as a vector of diseases, and is an important laboratory animal

Examples of house mouse in a Sentence

Recent Examples on the Web

New York City house mice, the kind probably nibbling away in the pantry, are leaving behind more than an unwelcome mess. Melanie Grayce West, WSJ, "Mice in New York Carry Rare and Dangerous Diseases, Study Finds," 17 Apr. 2018 The scientists used standard lab species: The Norway rat (Rattus novegicus) and house mouse (Mus musculus), both of which are common cohabitants in our towns and cities. National Geographic, "These Mice Spy on Their Predators—By Sniffing Their Tears," 29 Mar. 2018 The researchers found that the longer the Natufians stayed in one spot, the better the house mice thrived. Jason Daley, Smithsonian, "Mice Have Called Human Houses Home for 15,000 Years," 29 Mar. 2017

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

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First Known Use of house mouse

circa 1555, in the meaning defined above

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Time Traveler for house mouse

The first known use of house mouse was circa 1555

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house mouse


Medical Definition of house mouse

: a mouse that frequents houses especially : a common nearly cosmopolitan grayish-brown mouse of the genus Mus (M. musculus) that lives and breeds about buildings, is an important laboratory animal, and is an important pest as a consumer of human food and as a vector of diseases

More from Merriam-Webster on house mouse

Rhyming Dictionary: Words that rhyme with house mouse Encyclopedia article about house mouse

Comments on house mouse

What made you want to look up house mouse? Please tell us where you read or heard it (including the quote, if possible).


to affect and impair by alcohol or a drug

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