hard or impossible to manage; stubbornly disobedient:
a refractory child.
resisting ordinary methods of treatment.
difficult to fuse, reduce, or work, as an ore or metal.
noun, plural refractories.
a material having the ability to retain its physical shape and chemical identity when subjected to high temperatures.
refractories, bricks of various shapes used in lining furnaces.
unmanageable or obstinate
(med) not responding to treatment
(of a material) able to withstand high temperatures without fusion or decomposition
noun (pl) -ries
a material, such as fireclay or alumina, that is able to withstand high temperatures: used to line furnaces, kilns, etc
refractory re·frac·to·ry (rĭ-frāk’tə-rē)
Resistant to treatment, as a disease.
Unresponsive to stimuli, as a muscle or nerve fiber.
Having a high melting point. Ceramics that are made from clay and minerals are often refractory, as are metal oxides and carbides. Refractory materials are often used as liners in furnaces.
Resistant to heat.
Of or relating to a refractory period.
- Refractory anemia
refractory anemia n. Any of a group of anemic conditions that is not associated with another disease and that is marked by a persistent, frequently advanced anemia that can only be successfully treated through blood transfusions.
noun, Physiology. 1. a short period after a nerve or muscle cell fires during which the cell cannot respond to additional stimulation. refractory period noun 1. a period during which a nerve or muscle is incapable of responding to stimulation, esp immediately following a previous stimulation. In an absolute refractory period there is a total […]
- Refractory state
refractory state n. Subnormal excitability of a muscle or nerve immediately following a response to previous excitation.
verb (used with object) 1. to subject to refraction. 2. to determine the refractive condition of (an eye). verb (transitive) 1. to cause to undergo refraction 2. to measure the refractive capabilities of (the eye, a lens, etc) refract re·fract (rĭ-frākt’) v. re·fract·ed, re·fract·ing, re·fracts To deflect something, especially light, from a straight path by […]