abacus

An abacus is an ancient tool used for calculating that remains popular in some places even today. Some sort of counter (beads, beans, stones) is moved in a groove or on a wire to represent the different numbers in the equation.

Abacus is a Latin word from a Greek word abax, which meant "counting table." The original abaci were created in sand. The plural abacuses can also be used. In architecture, an abacus can also refer to a flat slab that sits on top of the broad part of a pillar or column (called the capital) to help support a beam (called an architrave) that rests across several pillars.

Primary Meanings of abacus

1.
n
a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves
2.
n
a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave
Full Definitions of abacus
1

n a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves

Type of:
calculating machine, calculator
a small machine that is used for mathematical calculations
2

n a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave

Type of:
tablet
a slab of stone or wood suitable for bearing an inscription

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