Electronic or mechanical devices designed to perform mathematical calculations. Can also refer to people who calculate.
From Latin 'calculare' meaning 'to reckon, compute', derived from 'calculus' meaning 'small stone'. Romans used small stones or pebbles on counting boards (abaci) for arithmetic.
The word literally means 'little stones' because ancient Romans did math by moving pebbles around on counting boards. Every time you use a calculator, you're etymologically throwing stones around - just digitally!
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