Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “megabyte”


noun [C]
/ˈmeɡəbaɪt/ (abbreviation MB, Mbyte, also informal meg) IT
a unit used for measuring the amount of information that a computer disk can store, or the size of a computer file: a 512-megabyte USB flash drive Memory comes on 64 meg smart cards.
(Definition of megabyte from the Cambridge Business English Dictionary © Cambridge University Press)
What is the pronunciation of megabyte?
Add Cambridge dictionaries to your browser to your website

Definitions of “megabyte” in other dictionaries

Word of the Day


When birds roost, they go somewhere to rest or sleep.

Word of the Day


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