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scintillation (n.)

"the emitting of sparks or spark-like flashes," specifically the twinkling of stars in the night sky, 1620s, from Latin scintilationem (nominative scintillatio), noun of action from past-participle stem of scintillare (see scintillate).

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Definitions of scintillation

scintillation (n.)
(physics) a flash of light that is produced in a phosphor when it absorbs a photon or ionizing particle;
scintillation (n.)
a rapid change in brightness; a brief spark or flash;
Synonyms: twinkle / sparkling
scintillation (n.)
a brilliant display of wit;
scintillation (n.)
the quality of shining with a bright reflected light;
Synonyms: glitter / glister / glisten / sparkle
scintillation (n.)
the twinkling of the stars caused when changes in the density of the earth's atmosphere produce uneven refraction of starlight;
From wordnet.princeton.edu