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refractory, stubborn | [in medicine] not responding to treatment | ||
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furnace lining, refractory | lining consisting of material with a high melting point; used to line the inside walls of a furnace | ||
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recalcitrant, fractious, refractory | stubbornly resistant to authority or control | ||
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refractory | temporarily unresponsive or not fully responsive to nervous or sexual stimuli |