Etymology
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scintillate (v.)

1620s, "to sparkle or twinkle," as the fixed stars do, and typically with reference to them, from Latin scintillatus, past participle of scintillare "to sparkle, glitter, gleam, flash," from scintilla "spark" (see scintilla). Figurative use is by 1751 (implied in scintillation). Related: Scintillated; scintillating.

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Definitions of scintillate

scintillate (v.)
give off;
the substance scintillated sparks and flashes
scintillate (v.)
reflect brightly;
Synonyms: sparkle / coruscate
scintillate (v.)
emit or reflect light in a flickering manner;
Synonyms: twinkle / winkle
scintillate (v.)
physics: fluoresce momentarily when struck by a charged particle or high-energy photon;
scintillate (v.)
be lively or brilliant or exhibit virtuosity;
Synonyms: sparkle / coruscate
From wordnet.princeton.edu