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abacus

play
noun aba·cus \ˈa-bə-kəs, ə-ˈba-\

Simple Definition of abacus

  • : a device used for counting and calculating by sliding small balls or beads along rods or in grooves

Full Definition of abacus

plural aba·ci play \ˈa-bə-ˌsī, -ˌkē; ə-ˈba-ˌkī\ or aba·cus·es

  1. 1 :  an instrument for performing calculations by sliding counters along rods or in grooves

  2. 2 :  a slab that forms the uppermost member or division of the capital of a column

Illustration of abacus

Origin of abacus

Latin, from Greek abak-, abax, literally, slab


First Known Use: 14th century

Other Mathematics and Statistics Terms



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