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Short "hint"

A device for making arithmetic calculations, consisting of a frame set with rods on which balls or beads are moved. Also: A slab forming the top of the capital of a column. (architecture)

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Usage examples (38)
  • The next is a continuation of the abaci of the capitals.
  • These rest on triple shafts, with carved caps and rounded abaci.
  • Alas, abaci have already been commoditized --you can own your own franchise!
  • Studies have shown that kids who master abaci have a better comprehension of math.
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