macroblock

Etymology

From macro- +‎ block.

Noun

macroblock (plural macroblocks)

1. (signal processing, video compression) A block of adjacent pixels, typically a rectangular 16×16 block
2. (archaeology) An area of a dig where there are multiple adjacent block excavations
   • 2003, David L. Carlson, “Figuring Out "What Happened in the Middle Archaic?"”, in Theory, Method, and Practice in Modern Archaeology‎, →ISBN, page 78:

     In 1975 the macroblock area was stepped back so that a smaller block excavation could extend below Horizon 8.