An example of arithmetic is adding two and two together to make four.
The increase in the food supply is arithmetic.
Her arithmetic is poor.
Origin of arithmetic
- Middle 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 ar- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- 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.