Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “optical mouse”

optical mouse

noun [C]     IT
a computer mouse that uses light rather than a rolling ball to know when the mouse is being moved: The computers all come with an optical mouse and a keyboard.
(Definition of optical mouse noun from the Cambridge Business English Dictionary © Cambridge University Press)
Focus on the pronunciation of optical mouse

Word of the Day

beneficiary

a person or group who receives money, advantages, etc. as a result of something else

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More