Glycerolize is a relatively obscure term, and there are few commonly used synonyms for it. One possible alternative is "glycerinate," which means to add or combine glycerol with another substance. Another option is "glycerolise," which is a variation of the original word that means the same thing. Alternatively, "glycerinize" is a term that has a similar meaning: to treat with glycerin or convert into glycerin. "Glycerize" is yet another possible synonym, and it means to make something glycerol-based or to treat with glycerol. Though the term glycerolize may be unfamiliar to some, there are several similar words that can be used to convey the same concept.