saponified

(verb) become converted into soap by being hydrolized into an acid and alcohol as a result of being treated with an alkali. Synonyms: saponify. Example: "The oil saponified."

(verb) convert into soap by hydrolizing an ester into an acid and alcohol as a result of treating it with an alkali. Synonyms: saponify. Example: "Saponify oils and fats."

(adj) converted into soap. Synonyms: saponified (vs. unsaponified). Example: "Saponified oils."