• To cover a surface with a layer or design. Also, that which is placed over, or which otherwise covers something else. For example, a graticule placed over the screen of an oscilloscope.
  • The superimposition or insertion of one image onto or into another. Used, for instance, to place a computer-generated image onto a filmed image.
  • The use of the same area of a computer's RAM for multiple segments of the same program. When the size of a program exceeds the memory capacity of a given system, segments that are not needed at a given instant are shuttled out of the main memory, and when needed are shuttled back in, each time overwriting the segment which had been there earlier.
  • An area code whose boundaries are the same as those of another area code. That is, both area codes serve the same specific region or zone. Also called area code overlay (2).

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