1. the method or process of computation with figures: the most elementary branch of mathematics.
2. Also called higher arithmetic, theoretical arithmetic. the theory of numbers; the study of the divisibility of whole numbers, the remainders after division, etc.
3. a book on this subject. adjective, none, arithmetic[ar-ith-met-ik]/ˌær ɪθˈmɛt ɪk/
4. Also, arithmetical. of or relating to arithmetic.
"bases can be arithmetic."
"operations can be arithmetic."
"calculations can be arithmetic."
"means can be arithmetic."
"tests can be arithmetic."
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