Abacus (noun) Definition, Meaning & Examples

noun, plural ab·a·cus·es, ab·a·ci [ab-uh-sahy, -kahy, uh-bak-ahy]. /ˈæb əˌsaɪ, -ˌkaɪ, əˈbæk aɪ/.
  1. a device for making arithmetic calculations, consisting of a frame set with rods on which balls or beads are moved.
  2. a slab forming the top of the capital of a column.
noun plural -ci (-ˌsaɪ) or -cuses
  1. a counting device that consists of a frame holding rods on which a specific number of beads are free to move. Each rod designates a given denomination, such as units, tens, hundreds, etc, in the decimal system, and each bead represents a digit or a specific number of digits
  2. the flat upper part of the capital of a column
Abacus (noun) Definition, Meaning & Examples

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