| Library / English Dictionary |
LUMINESCENCE
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Light from nonthermal sources
Synonyms:
Classified under:
Nouns denoting attributes of people and objects
Hypernyms ("luminescence" is a kind of...):
brightness; brightness level; light; luminance; luminosity; luminousness (the quality of being luminous; emitting or reflecting light)
Derivation:
luminesce (be or become luminescent; exhibit luminescence)
luminescent (emitting light not caused by heat)
Sense 2
Meaning:
Light not due to incandescence; occurs at low temperatures
Classified under:
Nouns denoting natural phenomena
Hypernyms ("luminescence" is a kind of...):
light; visible light; visible radiation ((physics) electromagnetic radiation that can produce a visual sensation)
Hyponyms (each of the following is a kind of "luminescence"):
bioluminescence (luminescence produced by physiological processes (as in the firefly))
chemiluminescence (luminescence resulting from a chemical reaction as the oxidation of luciferin in fireflies)
Derivation:
luminesce (be or become luminescent; exhibit luminescence)
luminescent (emitting light not caused by heat)
