refractory
lining consisting of material with a high melting point; used to line the inside walls of a furnace • Syn: furnace lining • Hypernyms: lining, liner • Substance Meronyms: fireclay, alumina, aluminum oxide, aluminium oxide
1. not responding to treatment - a stubborn infection - a refractory case of acne - stubborn rust stains • Syn: stubborn • Similar to: intractable • Derivationally related forms: stubbornness (for: stubborn), refractoriness • Topics: medicine, medical specialty 2. temporarily unresponsive or not fully responsive to nervous or sexual stimuli - the refractory period of a muscle fiber • Similar to: unresponsive 3. stubbornly resistant to authority or control - a fractious animal that would not submit to the harness - a refractory child • Syn: fractious, recalcitrant • Similar to: disobedient • Derivationally related forms: refractoriness, fractiousness (for: fractious)
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