Meaning of ARITHMETIC in English

ARITHMETIC

I. a ‧ rith ‧ me ‧ tic 1 /əˈrɪθmətɪk/ BrE AmE noun [uncountable]

[ Date: 1200-1300 ; Language: Old French ; Origin: arismetique , from Latin , from Greek , from arithmein 'to count' , from arithmos 'number' ]

the science of numbers involving adding, multiplying etc ⇨ mathematics

II. ar ‧ ith ‧ met ‧ ic 2 /ˌærɪθˈmetɪk◂/ BrE AmE ( also ar‧ith‧met‧i‧cal /-tɪk ə l/) adjective technical

involving or related to arithmetic:

the arithmetic mean (=average)

—arithmetically /-kli/ adverb

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.