refractory

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refractory

 [re-frak´tah-re]
1. not readily yielding to treatment.
2. not responding to a stimulus.

re·frac·to·ry

(rē-frak'tōr-ē),
1. Resistant to treatment, as of a disease. Synonym(s): intractable (1) , obstinate (2)
2. Synonym(s): obstinate (1)
[L. refractarius, fr. refringo, pp. -fractus, to break in pieces]

refractory

(rĭ-frăk′tə-rē)
adj.
Resistant to treatment: a refractory case of acne.

re·frac′to·ri·ly adv.
re·frac′to·ri·ness n.

refractory

adjective Resistant to therapy; intractable; unresponsive.

refractory

adjective Intolerable, resistant to therapy, intractable, unresponsive, stubborn

re·frac·to·ry

(rĕ-frak'tŏr-ē)
1. Resistant to treatment, as of a disease.
Synonym(s): intractable (1) , obstinate (2) .
2. Synonym(s): obstinate (1) .
[L. refractarius, fr. refringo, pp. -fractus, to break in pieces]

re·frac·to·ry

(rĕ-frak'tŏr-ē)
Resistant to treatment, as of a disease.
[L. refractarius, fr. refringo, pp. -fractus, to break in pieces]
References in periodicals archive ?
Free radical activity of synthetic vitreous fibers: iron chelation inhibits hydroxyl radical generation by refractory ceramic fiber.
It also confirmed that the transaction would not squeeze out competitors that manufacture refractory ceramics (in which talc is an input) or other talc suppliers.
Summary: TEHRAN (FNA)- A group of researchers at Iran Materials and Energy Research Center (MERC) suggested a low-cost process to commercialize the production of refractory ceramics from nanostructured alpha-alumina.
Oil shale ash can be used as a filler for dense and porous concrete, at production of ceramic articles (facing and refractory ceramics), as well as of binding materials (adding of 20-30% oil shale ash to concrete increases significantly its hydraulic activity).
Such method of remelting can not ensure efficient refining of the melt from impurities, including refractory ceramics, alkaline metals, gases, etc.

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