refractory

adj. १ (as, capable of enduring or resisting high temperature) उत्तापसह (as in : refractory clay उत्तपसह माती, उत्तापसह मृत्तिका) २ (as, difficult to fuse, corrode, reduce or draw out) दुर्द्राव्य (as in : refractory metal दुर्द्राव्य धातु) ३ Geol. प्रतीप (as in : refractory ore प्रतीप धातुक)