arithmetic
a‧rith‧me‧tic1 /əˈrɪθmətɪk/ 
noun [uncountable]
ar‧ith‧met‧ic2 /ˌærɪθˈmetɪk◂/ (also ar‧ith‧met‧i‧cal /-tɪkəl/) adjective technical
involving or related to arithmetic:
the arithmetic mean (=average)
—arithmetically /-kli/ adverb
| I |
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 ⇨ mathematicsLanguage: Old French
Origin: arismetique, from Latin, from Greek, from arithmein 'to count', from arithmos 'number'
| II |
(also ar‧ith‧met‧i‧cal /-tɪkəl/) adjective technicalinvolving or related to arithmetic:
—arithmetically /-kli/ adverb