LUMINESCENCE

Pronunciation (US): (GB):

Meaning:

Light from nonthermal sources

Synonyms:

glow; luminescence

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)

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)