arithmetic

[ noun uh-rith-muh-tik; adjective ar-ith-met-ik ]
/ noun əˈrɪθ mə tɪk; adjective ˌær ɪθˈmɛt ɪk /
Save This Word!

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.
QUIZ
QUIZ YOURSELF ON AFFECT VS. EFFECT!
In effect, this quiz will prove whether or not you have the skills to know the difference between “affect” and “effect.”
Question 1 of 7
The rainy weather could not ________ my elated spirits on my graduation day.

Origin ofarithmetic

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

OTHER WORDS FROM arithmetic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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
of, relating to, or using arithmetic

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

Scientific definitions for arithmetic

arithmetic
[ ə-rĭthmĭ-tĭk ]

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