# arithmetic

[ noun uh-rith-muh-tik; adjective ar-ith-met-ik ]

/ noun əˈrɪθ mə tɪk; adjective ˌær ɪθˈmɛt ɪk /

### noun

the method or process of computation with figures: the most elementary branch of mathematics.

Also called higher arithmetic, theoretical arithmetic. the theory of numbers; the study of the divisibility of whole numbers, the remainders after division, etc.

a book on this subject.

### adjective ar·ith·met·ic [ar-ith-met-ik] /ˌær ɪθˈmɛt ɪk/

Also ar·ith·met·i·cal. of or relating to arithmetic.

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## Origin of arithmetic

1200–50; < Latin arithmētica, feminine singular of arithmēticus < Greek arithmētikḗ (téchnē) (art, skill) of numbers, equivalent to arithmé(ein) to reckon + -t(o)- verbal adjective + -ikḗ -ic; replacing Middle English arsmet(r)ike < Old French arismetique < Medieval Latin arismētica, with s for Late Greek th

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Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

## Examples from the Web for arithmetic

## British Dictionary definitions for arithmetic

## arithmetic

/ (əˈrɪθmətɪk) /

### noun

the branch of mathematics concerned with numerical calculations, such as addition, subtraction, multiplication, and division

one or more calculations involving numerical operations

knowledge of or skill in using arithmetichis arithmetic is good

### adjective (ˌærɪθˈmɛtɪk) ˌarith'metical

of, relating to, or using arithmetic

Derived Formsarithmetically, adverbarithmetician, noun

## Word Origin for arithmetic

C13: from Latin arithmētica, from Greek arithmētikē, from arithmein to count, from arithmos number

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

## Word Origin and History for arithmetic

## arithmetic

mid-13c., arsmetike, from Old French arsmetique (12c.), from Latin arithmetica, from Greek arithmetike (tekhne) "(the) counting (art)," fem. of arithmetikos "of or for reckoning, arithmetical," from arithmos "number, counting, amount," from PIE root *re(i)- "to reason, count" (cf. Old English, Old High German rim "number;" Old Irish rim "number," dorimu "I count;" Latin ritus "religious custom;" see read).

Originally in English also arsmetrik, on folk etymology from Medieval Latin ars metrica; spelling corrected early 16c. Replaced native tælcræft, literally "tell-craft."

Online Etymology Dictionary, © 2010 Douglas Harper

## Science definitions for arithmetic

## arithmetic

[ ə-rĭth′mĭ-tĭk ]

The mathematics of integers, rational numbers, real numbers, or complex numbers under the operations of addition, subtraction, multiplication, and division.

The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.