IPA: /ˌsæpəˌnɪfɪˈkeɪʃən/
KK: /sæpənɪfɪˈkeɪʃən/
A chemical process that occurs when fats or oils react with an alkali to produce soap and glycerin.
The saponification of fats is essential in soap making.
Saponification → It is formed from "sapo" (from Latin, meaning soap) and "-fication" (from Latin "facere", meaning to make). The word describes the process of making soap from fats or oils through a chemical reaction with an alkali.
Think of 'soap' ('sapo') being 'made' ('-fication') — that's what saponification means, the process of making soap.