definition of
megabyte

[1] #1 megabyte n. [M, MB] a unit of information equal to 1000 kilobytes or 10^6 (1,000,000) bytes. wn

[2] #2 megabyte n. [mebibyte, M, MB, MiB] a unit of information equal to 1024 kibibytes or 2^20 (1,048,576) bytes. wn