megabyte

1. (computing, formal) One million (10⁶, or 1,000,000) bytes or 1,000 kilobytes.Examples: "The IBM 2301 Drum Storage (Figure 20) provides random access storage of approximately 4 million bytes at a data rate of 1.2 megabytes per second."; "This 70-megabyte [69,889,536 bytes] data module contains fixed heads in addition to the normal access heads."; "AT&T Wireless Services Inc. in Redmond, Washington, is currently offering $1 per megabyte as its cheapest rate for General Packet Radio Service wireless service, which can provide 20K to 40K bit/sec. throughput. But that price is only if a subscriber buys the most megabytes per month now being offered: 200MB of data for $199 a month."formal

2. (computing, informal) A mebibyte.Examples: "One megabyte is 1,048,576 bytes. One megahertz, however is a million Hertz."; "Defaults to 2 megabytes (2,097,152 bytes)."; "By default, each log file [...] is exactly 5 megabytes (5,242,880 bytes) in size."informal