[ad_1] noun
  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 ar·ith·met·ic [ar-ith-met-ik] /ˌær ɪθˈmɛt ɪk/

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


  1. the branch of mathematics concerned with numerical calculations, such as addition, subtraction, multiplication, and division
  2. one or more calculations involving numerical operations
  3. knowledge of or skill in using arithmetichis arithmetic is good

adjective (ˌærɪθˈmɛtɪk) ˌarith’metical

  1. of, relating to, or using 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.”

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

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