IPA: /nəˌsɛsɪˈteɪʃən/
KK: /nɪˈsɛsɪˌteɪʃən/
The act of making something necessary or unavoidable; a situation that requires a particular action or decision.
The necessitation of new policies was clear after the recent events.
Necessitation is formed from "necessitas" (meaning necessity) and the suffix "-tion" (meaning the action or process of). The word refers to the action or process of making something necessary.
Think of 'necessity' as the core idea, and remember that 'necessitation' means the process of making something necessary.