Longman Dictionary of Contemporary English homepage

Topic: MATHS

Date: 1600-1700
Language: Latin
Origin: 'small stone, piece of mineral that forms in the body, stone used in counting', from calx; CHALK1

calculus

noun
     
cal‧cu‧lus [uncountable]
HM the part of mathematics that deals with changing quantities, such as the speed of a falling stone or the slope of a curved line
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