D defs.my
Entry 1 sense Webster, 1913

Saponification

/səp-änˌ-əf-ək-āsh'-ən/ · Sa·pon·i·fi·ca·tion · IPA /səpˌɑnəfəkˈeɪʃən/
01 n. The act, process, or result, of soap making; conversion into soap; specifically (Chem.), the decomposition of fats and other ethereal salts…
  1. 1.
    The act, process, or result, of soap making; conversion into soap; specifically (Chem.), the decomposition of fats and other ethereal salts by alkalies; as, the saponification of ethyl acetate.(Chem.)