bitmap

/ˈbɪtˌmæp/
noun
  1. A digital image made up of a grid of tiny squares (pixels), where each square has a specific color.
    • The designer saved the logo as a bitmap so it would look sharp on the screen.
    • Older computer games used simple bitmaps for their characters and backgrounds.
    • When you zoom in on a bitmap, you can see the individual colored squares.
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