Meaning of “megabyte” in the English Dictionary

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"megabyte" in American English

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megabytenoun [ C ]

us /ˈmeɡ·əˌbɑɪt/ abbreviation MB

a unit of measurement of computer storage space equal to 1,048,576 bytes

(Definition of “megabyte” from the Cambridge Academic Content Dictionary © Cambridge University Press)

"megabyte" in Business English

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megabytenoun [ C ]

uk /ˈmeɡəbaɪt/ us 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)