MUCILAGE Meaning of MUCILAGE in English n. 1 a viscous substance obtained from plant seeds etc. by maceration. 2 US a solution of gum. mucilaginous adj.[ ME f. F f. LL mucilago -ginis musty juice (MUCUS) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012