ˈgluttonismnonce-wd. [f. as prec. + -ism.] The practice of being a glutton (in quot.fig., cf. glutton n. 2). 1823De Quincey Lett.Yng. ManWks. 1860 XIV. 46 One of the chief symptoms is an enormous ‘gluttonism’ for books, and for adding language to language.