Lewis & Short

diffundĭto, āre, v. freq. a. [diffundo], to pour out, scatter, spread (very rare; perh. only post-class.): pretium per domos, Amm. 18, 5, 6: aliquid ex sese, id. 21, 1, 11: ubique sese diffunditans, id. 16, 12: amoris vi diffunditari ac didier, to be consumed, wasted, Plaut. Merc. prol. 54.