Dictionary > Radiant

Radiant

radiant
1. Emitting or proceeding as from a center; rays; radiating; radiate.
2. Especially, emitting or darting rays of light or heat; issuing in beams or rays; beaming with brightness; emitting a vivid light or splendor; as, the radiant sun. Mark what radiant state she spreads. (milton)
3. Beaming with vivacity and happiness; as, a radiant face.
4. Giving off rays; said of a bearing; as, the sun radiant; a crown radiant.
5. (Science: botany) Having a raylike appearance, as the large marginal flowers of certain umbelliferous plants; said also of the cluster which has such marginal flowers.
(Science: physics) Radiant energy See Radiant.
Origin: L. Radians, -antis, p. Pr. Of radiare to emit rays or beams, fr. Radius ray: cf. F. Radiant. See Radius, Ray a divergent line.
1. (Science: optics) The luminous point or object from which light emanates; also, a body radiating light brightly.
2. (Science: geometry) A straight line proceeding from a given point, or fixed pole, about which it is conceived to revolve.
3. (Science: astronomy) The point in the heavens at which the apparent paths of shooting stars meet, when traced backward, or whence they appear to radiate.


You will also like...

Homeostatic Mechanisms and Cellular Communication
Homeostatic Mechanisms and Cellular Communication

Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..

Circulation
Circulation

The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..

river
Running Water Freshwater Communities

This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..

DNA molecule
Genetic Control – On and Off Genes

Genes are the blueprint of our bodies, a blueprint that creates a variety of proteins essential to any organism's surviv..

Regulation of Biological Systems
Regulation of Biological Systems

Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..

Stem
Stems

Stems primarily provide plants structural support. This tutorial includes lectures on the external form of a woody twig ..