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To join luster; to shine with united radiance, or one general light. [R.] The several things which engage our affections . . . shine forth and constellate in God. Boule.

To become crimson; to blush. Ancient towers . . . beginning to crimson with the radiant luster of a cloudless July morning. De Quincey.

vent conduction of heat, and sometimes having the glass silvered to prevent absorption of radiant heat; -- called also, according to the particular shape, Dewar bulb, Dewar tube, etc.

Freely permeable by radiant heat.

The property of transmitting radiant heat; the quality of being diathermous. Melloni.

The doctrine or the phenomena of the transmission of radiant heat. Nichol.

Having the property of transmitting radiant heat; diathermal; - - opposed to athermanous.

Emission of radiance.

To thrust forth; to emit; to push out. [Obs.] So from the seas exerts his radiant head The star by whom the lights of heaven are led. Dryden.

Illumination; irradiance; brilliancy. Sir W. Scott.

Bright with the radiance of intellect; not darkened or confused by delirium or madness; marked by the regular operations of reason; as, a lucid interval.

Any body that gives light, especially one of the heavenly bodies. " Radiant luminary." Skelton. Where the great luminary . . . Dispenses light from far. Milton.

to death. Phil. ii. 27. He drew not nigh unheard; the angel bright, Ere he drew nigh, his radiant visage turned. Milton.

A circle, or disk, or any indication of radiant light around the heads of divinities, saints, and sovereigns, upon medals, pictures, etc.; a halo. See Aureola, and Glory, n., 5.

To emit rays; to be radiant; to shine. Virtues shine more clear In them [kings], and radiant like the sun at noon. Howell.

An instrument designed for measuring the mechanical effect of radiant energy.

tive modification or application of the thermopile, used for indicating minute changes of radiant heat, or temperature.

Direct observation of objects opaque to light by means of some other form of radiant energy, as the Röntgen rays. -- Ra`di*o*scop"ic (#), *scop"ic*al (#), a.

Telegraphy using the radiant energy of electrical (Hertzian) waves; wireless telegraphy; -- the term adopted for use by the Radiotelegraphic Convention of 1912.

Radiating; radiant. [Obs.] G. Fletcher.