What does blit mean?
"Blit" is a term from computer graphics referring to a fast operation that copies a rectangular block of pixel data from one location in memory to another — typically from an off-screen buffer onto the visible display. The word functions both as a noun (the operation itself) and as a verb (to perform it), so a programmer might say they "blit a sprite onto the screen." Coined in the early era of bitmap graphics, the term derives from "block transfer," combining ideas of blocks of data and rapid movement of bits. Blits are fundamental to rendering: compositing sprites, scrolling backgrounds, and updating windows all rely on this simple but performance-critical operation. While largely jargon confined to graphics programming, game development, and hardware documentation, the blit remains one of the most important low-level building blocks of modern visual computing.
An operation that transfers a rectangular block of pixel or bitmapped data between areas of memory, especially onto a display.
"The graphics chip executes millions of blits per second."
Often capitalized in historical usage as BitBLT or BLT.
To perform such a block-transfer copy of graphical data.
"The engine blits each tile directly into video memory."
Regular plural formation.
"The driver optimizes multiple blits into a single pass."
Before GPUs had fancy names, every game you loved was powered by one humble operation called the blit.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of blit
"Blit" originated in 1970s computer graphics research, notably associated with work on bitmap displays at Xerox PARC, where the related term "BitBLT" described a block-transfer routine for moving pixel data. The word is generally understood as a contraction of "block transfer" or "bit-block transfer," reflecting its technical function rather than any older linguistic lineage. As such, its cognates are not traditional etymological relatives but fellow computing coinages built on "bit" and "block."
Related word forms
How blit is actually used
Strictly technical jargon used in graphics programming, game development, and hardware documentation; rarely encountered outside those contexts.
Easily confused with blit
'Bleat' is the cry of a sheep or goat, while 'blit' is a computing term for copying a block of pixels.