Definition of Calculus
Calculus: A stone, as in the urinary tract, or calcium salt deposits on the teeth. In Latin, the word calculus means 'a pebble.' Pebbles were once used for counting, from which came the mathematical field of calculus.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=18384
Last Editorial Review: 3/19/2012
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