Vitriolating is a rarely used verb that means "to convert into or treat with vitriol", a highly corrosive substance. The word is spelled v-i-t-r-i-o-l-a-t-i-n-g and is pronounced /ˈvɪtriəleɪtɪŋ/. The "vitriol" part of the word comes from the Latin word "vitriolum" while the suffix "-ating" indicates the action or process of something. Overall, vitriolating is a technical term used most often in chemistry or industrial processes.