nu ‧ me ‧ ra ‧ tion /ˌnjuːməˈreɪʃ ə n $ ˌnuː-/ BrE AmE noun [uncountable and countable] technical
[ Date: 1400-1500 ; Language: Latin ; Origin: numeratio , from numerare 'to count' , from numerus ; ⇨ ↑ number 1 ]
a system of counting or the process of counting