arithmetic
Concise Oxford English Dictionary © 2008 Oxford University Press:
arithmetic
▶noun /əˈrɪθmətɪk/ the branch of mathematics concerned with the properties and manipulation of numbers.
■ the use of numbers in counting and calculation.
▶adjective /ˌarɪθˈmɛtɪk/ relating to arithmetic.– derivatives
arithmetical adjective,
arithmetically adverb,
arithmetician noun.
arithmetical adjective,
arithmetically adverb,
arithmetician noun.
– origin ME: from OFr. arismetique, based on L. arithmetica, from Gk arithmētikē (tekhnē) ‘(art) of counting’, from arithmos ‘number’.
'arithmetic' also found in these Oxford entries:
ALU
- arithmetic progression
- cipher
- decimal
- innumerate
- mean
- numerate
- quadrivium
- R
- root mean square
- trivial

