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Pronunciation:  ri'frakturee

WordNet Dictionary
  1. [n]  lining consisting of material with a high melting point; used to line the inside walls of a furnace
  2. [adj]  resistant to authority or control; "as refractory as a mule"
  3. [adj]  stubbornly resistant to authority or control; "a fractious animal that would not submit to the harness"; "a refractory child"
  4. [adj]  marked by stubborn resistance to and defiant of authority or guidance; "a recalcitrant teenager"; "everything revolves around a refractory individual genius"
  5. [adj]  (medicine) not responding to treatment; "a stubborn infection"; "a refractory case of acne"

REFRACTORY is a 10 letter word that starts with R.


 Synonyms: disobedient, fractious, furnace lining, intractable, recalcitrant, stubborn, uncooperative
 See Also: alumina, aluminium oxide, aluminum oxide, fireclay, lining



Webster's 1913 Dictionary
  1. \Re*frac"to*ry\ (-r?), a. [L. refractorius, fr.
    refringere: cf. F. refractaire. See {Refract}.]
    1. Obstinate in disobedience; contumacious; stubborn;
       unmanageable; as, a refractory child; a refractory beast.
             Raging appetites that are Most disobedient and
             refractory.                           --Shak.
    2. Resisting ordinary treatment; difficult of fusion,
       reduction, or the like; -- said especially of metals and
       the like, which do not readily yield to heat, or to the
       hammer; as, a refractory ore.
    Syn: Perverse; contumacious; unruly; stubborn; obstinate;
         unyielding; ungovernable; unmanageable.
  2. \Re*frac"to*ry\, n.
    1. A refractory person. --Bp. Hall.
    2. Refractoriness. [Obs.] --Jer. TAylor.
    3. OPottery) A piece of ware covered with a vaporable flux
       and placed in a kiln, to communicate a glaze to the other
       articles. --Knight.
Medical Dictionary
 Definition: Not yielding, as in a condition that resists treatment or a nerve or muscle that resists stimulation.