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English definition of “arithmetic”

arithmetic

noun [U]     /əˈrɪθ.mə.tɪk/ US  /-t̬ɪk/
the part of mathematics that involves the adding and multiplying, etc. of numbers: I've never been very good at arithmetic. an arithmetic testBranches and types of mathematics calculations involving adding and multiplying, etc. numbers: I did some quick mental arithmetic and decided it was going to cost too much. I can't work out which of these is cheaper - could you do the arithmetic?Branches and types of mathematics arithmetical     /ˌær.ɪθˈmet.ɪ.kəl/ US  /ˌer.ɪθˈmet̬-/ adjective (also arithmetic,   /ˌær.ɪθˈmet.ɪk/   ) arithmetical problemsBranches and types of mathematics arithmetically     /ˌær.ɪθˈmet.ɪ.kəl.i/ US  /ˌer.ɪθˈmet̬-/ adverb Branches and types of mathematics
(Definition of arithmetic noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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