calculus
[kalkyuhluh s]

noun, plural cal·cu·li [kalkyuhlahy] /ˈkæl kyəˌlaɪ/, cal·cu·lus·es.
Mathematics. a method of calculation, especially one of several highly systematic methods of treating problems by a special system of algebraic notations, as differential or integral calculus.
Pathology. a stone, or concretion, formed in the gallbladder, kidneys, or other parts of the body.
Also called tartar. Dentistry. a hard, yellowish to brownishblack deposit on teeth formed largely through the mineralization of dead bacteria in dental plaques by the calcium salts in salivary secretions and subgingival transudates.
calculation; estimation or computation: the calculus of political appeal.
Origin of calculus
1610–20; < Latin: pebble, small stone (used in reckoning), equivalent to calc (stem of calx stone) + ulus ule
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for calculi
calculation, calculus, geometry, math, algebra, division, addition, multiplication, subtraction, numbers, trigonometry, concretion, cystolith, bilestoneExamples from the Web for calculi
Historical Examples of calculi
Intestinal concretions (calculi or stones in the intestines).
Special Report on Diseases of the HorseUnited 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 tableman, or chessman.
The Archaeology and Prehistoric Annals of ScotlandDaniel Wilson
One case154 is reported in which 7802 calculi were found in the gallbladder, but they must have been very minute in size.
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.
calculus
noun plural luses
Word Origin for calculus
C17: from Latin: pebble, stone used in reckoning, from calx small stone, counter
Collins English Dictionary  Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
calculus
Online Etymology Dictionary, © 2010 Douglas Harper
calculus
[kăl′kyələs]
n. pl. cal•cu•lus•es
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
calculus
[kăl′kyələs]
Plural calculi (kăl′kyəlī′) calculuses
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
calculus
Note
Most modern sciences use calculus.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.