Receptaculum /(rĕs`ĕp*tăk"ū̇*lŭm)/ Rec·ep·tac·u·lum Receptaculum n. pl. Receptacula ((rĕs`ĕp*tăk"ū̇*lȧ)) A receptacle; as, the receptaculum of the chyle. (Anat.)