noun, plural cal·cu·li [kal-kyuh-lahy] /ˈkæl kyəˌlaɪ/, cal·cu·lus·es.
Origin of calculus
Related Words for calculicalculation, geometry, math, algebra, division, addition, multiplication, subtraction, numbers, trigonometry, concretion, cystolith, bilestone
Examples from the Web for calculi
Historical Examples of calculi
Intestinal concretions (calculi or stones in the intestines).Special Report on Diseases of the Horse
United States Department of Agriculture
Calculi may be globular, ovoid, cylindrical, and truncated cones.
Hence the Greek name ψηφοι, and the Roman calculi and scrupuli; from whence scrupus, a table-man, or chessman.The Archaeology and Prehistoric Annals of Scotland
The number of calculi which may be present at any time or be produced in the course of years ranges from one to several thousand.
One case154 is reported in which 7802 calculi were found in the gall-bladder, but they must have been very minute in size.
noun plural -luses
Word Origin for calculus
1660s, from Latin calculus "reckoning, account," originally "pebble used as a reckoning counter," diminutive of calx (genitive calcis) "limestone" (see chalk (n.)). Modern mathematical sense is a shortening of differential calculus. Also used from 1732 to mean kidney stones, etc., then generally for "concretion occurring accidentally in the animal body," such as dental plaque. Related: Calculous (adj.).