Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of luminous is as below...

Eclipse :: Eclipse (n.) An interception or obscuration of the light of the sun, moon, or other luminous body, by the intervention of some other body, either between it and the eye, or between the luminous body and that illuminated by it. A lunar eclipse is caused by the moon passing through the earth's shadow; a solar eclipse, by the moon coming between the sun and the observer. A satellite is eclipsed by entering the shadow of its primary. The obscuration of a planet or star by the moon or a planet, thoug

Radiant :: Radiant (n.) The luminous point or object from which light emanates; also, a body radiating light brightly..

Halo :: Halo (n.) A luminous circle, usually prismatically colored, round the sun or moon, and supposed to be caused by the refraction of light through crystals of ice in the atmosphere. Connected with halos there are often white bands, crosses, or arches, resulting from the same atmospheric conditions..

Crepusculous :: Crepusculous (a.) Pertaining to twilight; glimmering; hence, imperfectly clear or luminous..

Relucent :: Relucent (a.) Reflecting light; shining; glittering; glistening; bright; luminous; splendid.

Shadowy :: Shadowy (a.) Not brightly luminous; faintly light.

Macula :: Macula (n.) A spot, as on the skin, or on the surface of the sun or of some other luminous orb..

Fireball :: Fireball (n.) A luminous meteor, resembling a ball of fire passing rapidly through the air, and sometimes exploding..

Geissler Tube :: Geissler tube () A glass tube provided with platinum electrodes, and containing some gas under very low tension, which becomes luminous when an electrical discharge is passed through it; -- so called from the name of a noted maker in germany. It is called also Plucker tube, from the German physicist who devised it..

Voluminous :: Voluminous (a.) Of or pertaining to volume or volumes.

Galaxy :: Galaxy (n.) The Milky Way; that luminous tract, or belt, which is seen at night stretching across the heavens, and which is composed of innumerable stars, so distant and blended as to be distinguishable only with the telescope. The term has recently been used for remote clusters of stars..

Light :: Light (n.) That agent, force, or action in nature by the operation of which upon the organs of sight, objects are rendered visible or luminous..

Luminosity :: Luminosity (n.) The quality or state of being luminous; luminousness.

Accidental :: Accidental (n.) Those fortuitous effects produced by luminous rays falling on certain objects so that some parts stand forth in abnormal brightness and other parts are cast into a deep shadow.

Nebula :: Nebula (n.) A faint, cloudlike, self-luminous mass of matter situated beyond the solar system among the stars. True nebulae are gaseous; but very distant star clusters often appear like them in the telescope..

Illustrate :: Illustrate (v. t.) To make clear, bright, or luminous..

Photopsia :: Photopsia (n.) An affection of the eye, in which the patient perceives luminous rays, flashes, coruscations, etc. See phosphene..

Thaumatrope :: Thaumatrope (n.) An optical instrument or toy for showing the presistence of an impression upon the eyes after the luminous object is withdrawn.

Lustrous :: Lustrous (a.) Bright; shining; luminous.

Clear :: Clear (superl.) Free from opaqueness; transparent; bright; light; luminous; unclouded.

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