arithmetic[ə rit̸h′mə tik; for adj., ar′it̸h met′ik, er′-]
- The definition of arithmetic refers to working with numbers by doing addition, subtraction, multiplication, and division.
An example of arithmetic is adding two and two together to make four.
- the science or art of computing by positive real numbers, specif. by adding, subtracting, multiplying, and dividing
- knowledge of or skill in this science: her arithmetic is poor
Origin of arithmeticMiddle English arsmetrike ; from Old French arismetrique (infl. in form by Classical Latin ars metrica, the art of measurement) ; from Classical Latin arithmetica ; from Classical Greek (hē) arithmētikē (technē), (the) counting (art) ; from arithmētikos, arithmetical ; from arithmein, to count ; from arithmos, number
adjectivear·ith·met·ic also ar′ith·met′i·cal
- Of or relating to arithmetic.
- Changing according to an arithmetic progression: The increase in the food supply is arithmetic.
Origin of arithmeticMiddle English arsmetike, from Old French arismetique, from Medieval Latin arismetica, alteration of Latin arithmētica, from Greek arithmētikē (tekhnē), (art) of counting, feminine of arithmētikos, from arithmein, to count, from arithmos, number; see ar- in Indo-European roots.
From Middle English arsmetike, from Old French arismetique, from Latin arithmetica, from Ancient Greek ἀριθμητική (arithmētikē, “counting”) (τέχνη (tekhnē, “art”)), from ἀριθμός (arithmos, “number”). Used in English since 13th Century.