Meaning of REFRACTORY in English

REFRACTORY

I. rə̇ˈfrakt(ə)rē, rēˈf-, -)ri adjective

Etymology: alteration (influenced by -ory ) of refractary

1. : resisting control or authority : stubborn , unmanageable , perverse

to persuade her refractory daughter to agree to the propriety of what she was going to do — Anthony Trollope

bold attempts to reduce refractory material to poetic treatment — F.B.Millett

the boy was solitary and refractory to all education save that of wide and desultory reading — F.J.Mather

2.

a. : resistant to treatment or cure

a refractory fulminating lesion

b. : unresponsive to stimulus

the refractory period of a muscle fiber

c. : resistant or not responding to an infectious agent : immune , insusceptible

after recovery the animals were completely refractory to reinfection

3. : resisting treatment under ordinary or various extraordinary conditions : difficult to fuse, corrode, reduce, or draw out

refractory ore

refractory metals

especially : capable of enduring or resisting high temperature

refractory clays

refractory brick

refractory mortar

Synonyms: see unruly

II. noun

( -es )

1. obsolete : a refractory person

2. : a refractory material: as

a. : any of various nonmetallic ceramic substances that are characterized especially by their suitability for use as structural materials at high temperatures usually in contact with metals, slags, glass, or other corrosive materials (as in furnaces, crucibles, or saggers), that are classified chemically as acid (as silica and fireclay), basic (as magnesite and dolomite), or neutral (as high-alumina refractories, carbon, and silicon carbide), and that are produced in the form of brick and other shapes, finely ground cementing materials, castable concretes, plastics, and granular materials in bulk

b. : a substance resistant to corrosion by chemical agents and used especially in chemical plants and laboratories

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.