Definitions for "BitBlt"
(also Bit Blit or just Blit) An abreviation for "Bitwise Block Transfer," pronounced "BIT-blit." It just a fancy term for the process used to copy a rectangular image into the middle of the screen or another bitmap in memory.
Stands for bit block transfer, a hardware-based process that moves a rectangular block of bits from main memory into display memory.
BIT BLock Transfer, a bit string move, usually referring to moving the bits that represent an image from memory to display. Also known as a "blit".
a very common operation in graphics programming