.bmp - Computer Definition
(1) (BitMaP) Also known as a "bump" file, it is the native, bitmapped graphics format in Windows. A BMP can be saved in several color options: 1-, 4-, 8- and 24-bit color provide 2, 16, 256 and 16,000,000 colors respectively. BMP files use the .BMP or .DIB file extensions (DIB stands for Device-Independent Bitmap). See graphics formats. See also BPM.
(2) (Batch Message Processor) A facility for producing reports and batch updates to IMS databases.