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1. Not responding to treatment
   "a refractory case of acne"
   - stubborn
    
2. Temporarily unresponsive or not fully responsive to nervous or sexual stimuli
   "the refractory period of a muscle fibre"
    
3. Stubbornly resistant to authority or control
   "a refractory child"
   - fractious, recalcitrant, incalcitrant [non-standard]

1. Lining consisting of material with a high melting point; used to line the inside walls of a furnace
   - furnace lining

Derived forms: refractories

See also: disobedient, intractable, refractoriness, refractory-lined, unresponsive

Type of: liner, lining

Encyclopedia: Refractory