IPA: /nʌpˈtʃiːəlɪti/
KK: /nʌpˈtʃiːəlɪti/
The statistical measure of how often people get married in a certain area or group.
The nuptiality rate in the country has increased over the past decade.
Nuptiality → It is formed from "nuptialis" (from Latin, meaning of or pertaining to marriage) and the suffix "-ity" (meaning the state or condition of). The word "nuptiality" refers to the state or condition related to marriage.
Think of 'nuptial' which relates to marriage, and '-ity' indicating a state. This helps you remember that nuptiality refers to the state of being married.