[rey-dee-uh nt] /ˈreɪ di ənt/
emitting rays of light; shining; bright:
the radiant sun; radiant colors.
bright with joy, hope, etc.:
radiant smiles; a radiant future.
Physics. emitted or propagated by radiation.
a point or object from which rays proceed.
Astronomy. the point in the heavens from which a shower of meteors appears to .
a refractory absorbing and heat from the flames of a gas fireplace or the like.
sending out rays of light; bright; shining
characterized by health, intense joy, happiness, etc: a radiant countenance
emitted or propagated by or as radiation; radiated: radiant heat
sending out heat by radiation: a radiant heater
(physics) (of a physical quantity in photometry) evaluated by absolute energy measurements: radiant flux, radiant efficiency Compare luminous
a point or object that emits radiation, esp the part of a heater that gives out heat
(astronomy) the point in space from which a meteor shower appears to emanate
mid-15c., from Middle French radiant and directly from Latin radiantem (nominative radians) “beaming, shining,” present participle of radiare “to beam, shine” (see radiation). Of beauty, etc., first attested c.1500. Related: Radiantly.
“point or object from which light radiates,” 1727; see radiant (adj.). In astronomy, of meteor showers, from 1864.
radiant ra·di·ant (rā’dē-ənt)
A point from which light radiates to the eye.
Noun The apparent celestial origin of a meteor shower. For example, a point in the constellation Gemini is the radiant of the Geminid meteor shower.
[rey-dee-ey-tuh, -ah-tuh] /ˌreɪ diˈeɪ tə, -ˈɑ tə/ noun, Biology. 1. (in some classification systems) a major grouping that includes more or less radially symmetrical animals, as coelenterates (jellyfish, sea anemones, corals), ctenophores (comb jellies), and echinoderms (starfish, sea urchins, sea cucumbers).
- Radiata pine
/ˌreɪdɪˈɑːtə/ noun 1. a pine tree, Pinus radiata, native to the western USA. but grown in Australia, New Zealand, and elsewhere to produce building timber Often shortened to radiata
- Radiate crown
radiate crown n. A fan-shaped fiber mass on the white matter of the cerebral cortex, composed of the widely radiating fibers of the internal capsule.
[verb rey-dee-eyt; adjective rey-dee-it, -eyt] /verb ˈreɪ diˌeɪt; adjective ˈreɪ di ɪt, -ˌeɪt/ verb (used without object), radiated, radiating. 1. to extend, spread, or move like rays or radii from a center. 2. to emit rays, as of light or heat; irradiate. 3. to issue or proceed in rays. 4. (of persons) to project or […]