1. (noun)scintillation (physics) a flash of light that is produced in a phosphor when it absorbs a photon or ionizing particle Synonyms: twinkle, sparkling, sparkle, glitter, glisten, glister
5. (noun)scintillation the twinkling of the stars caused when changes in the density of the earth's atmosphere produce uneven refraction of starlight Synonyms: twinkle, sparkling, sparkle, glitter, glisten, glister