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Synonyms
scin·til·la·tion (sĭńtl-ā́shən)

noun 

  1. The act of scintillating.
  2. A spark; a flash.
  3. Astronomy Rapid variation in the light of a celestial body caused by turbulence in Earth's atmosphere; a twinkling.
  4. Physics A flash of light produced in a phosphor by absorption of an ionizing particle or photon.