Able to be calculated, measured, or figured out using mathematics or careful thought.
From Latin calculabilis, from calculare 'to count or compute,' derived from calculus meaning 'pebble' (because Romans used stones for counting). The suffix -able means 'capable of being.'
The Latin word calculus literally meant 'pebble' because ancient Romans and other cultures used small stones as early calculators—moving them to add, subtract, and solve problems. That's where the math term calculus comes from too!
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