lining consisting of material with a high melting point; used to line the inside walls of a furnace;
resistant to authority or control; "as refractory as a mule";
stubbornly resistant to authority or control; "a fractious animal that would not submit to the harness"; "a refractory child";
marked by stubborn resistance to and defiant of authority or guidance; "a recalcitrant teenager"; "everything revolves around a refractory individual genius";
not responding to treatment; "a stubborn infection"; "a refractory case of acne";
