mul ‧ ti ‧ pli ‧ ci ‧ ty /ˌmʌltəˈplɪsəti, ˌmʌltɪˈplɪsəti/ BrE AmE noun [singular, uncountable] formal
[ Date: 1400-1500 ; Language: Late Latin ; Origin: multiplicitas , from Latin multiplex ; ⇨ ↑ multiplex ]
a large number or great variety of things
multiplicity of
the multiplicity of courses available to language students