| / English Dictionary |
LUMINOUS
| Pronunciation (US): |  | (GB): | |
I. (adjective)
Sense 1
Meaning:
Softly bright or radiant
Example:
a sky luminous with stars
Synonyms:
aglow; lambent; lucent; luminous
Classified under:
Similar:
bright (emitting or reflecting light readily or in large amounts)
Derivation:
luminosity; luminousness (the quality of being luminous; emitting or reflecting light)
Context examples:
But the universe stayed dark, without any luminous sources, until gravity condensed matter into the first stars and galaxies.
(Most Distant Black Hole, NASA)
A SI derived unit of luminous flux.
(Lumen, NCI Thesaurus)
U Antliae is a carbon star, an evolved, cool and luminous star of the asymptotic giant branch type.
(Ageing Star Blows Off Smoky Bubble, ESO)
The galaxies that the team studied, collectively known as SPT0311-58, were originally identified as a single luminous source.
(Massive primordial galaxies found in ‘halo’ of dark matter, National Science Foundation)
Astronomers are still trying to figure out why this burst is so odd, and how this event relates to the more luminous gamma-ray bursts seen at much greater distances.
(NASA Missions Catch First Light from a Gravitational-Wave Event, NASA)
As the most luminous steady beacons in the Universe, quasars are believed to be powered by an accretion disk around the central black hole.
(Astronomers Study How Quasars Are Powered by Accretion Disks, The Titi Tudorancea Bulletin)
While the luminous part of a massive galaxy might be around 30 000 light years across, its roughly spherical halo is ten times larger in diameter.
(Enigmatic radio burst illuminates a galaxy’s tranquil ​halo, ESO)
The galaxy is the most luminous galaxy found to date and belongs to a new class of objects recently discovered by WISE — extremely luminous infrared galaxies, or ELIRGs.
(The Most Luminous Galaxy in Universe, NASA)
Researchers found that the infrared emission from dust heated by a flare causes an infrared signal that can be detected for up to a year after the flare is at its most luminous.
(Studies Find Echoes of Black Holes Eating Stars, NASA)
It is the luminous intensity in a given direction of a small monochromatic light source at 540 terahertz emitting 1/683 watt per steradian in that direction.
(Candela, NCI Thesaurus)
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