Etymology
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scintillant (adj.)

"sparkling, glittering, gleaming" as fixed stars do, c. 1600 in heraldry, from Latin scintillantem (nominative scintillans), present participle of scintillare "to sparkle, glitter, gleam, flash," from scintilla "spark" (see scintilla).

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Definitions of scintillant

scintillant (adj.)
having brief brilliant points or flashes of light;
scintillant mica
Synonyms: aglitter / coruscant / fulgid / glinting / glistering / glittering / glittery / scintillating / sparkly
From wordnet.princeton.edu