nebulization
/ˌnɛbjʊlʌɪˈzeɪʃn/ /ˌnɛbj(ə)lʌɪˈzeɪʃn/noun
1Chiefly Medicine. The conversion of a liquid into a fine mist or spray, especially for inhalation therapy. Also: inhalation therapy using this technique; medical treatment using a nebulizer.
2 Generally. The transformation of something into a nebulous state; an instance of this.
Origin
Mid 19th century. From nebulize + -ation.