1. Show many points or short flashes of light; sparkle
   "the substance scintillated sparks and flashes"
    
2. Reflect brightly
   "Unquarried marble scintillated on the hillside";
   - sparkle, coruscate, glister
    
3. (celestial body) emit or reflect light in a flickering manner
   "Does a constellation scintillate more brightly than a single star?";
   - twinkle, winkle [rare]
    
4. Fluoresce momentarily when struck by a charged particle or high-energy photon
   "the phosphor scintillated"
    
5. Be lively, brilliant or exhibit virtuosity
   "A scintillating conversation";
   - sparkle, coruscate, glister

Derived forms: scintillated, scintillates, scintillating

Type of: beam, emit, fluoresce, give off, give out, reflect, shine

Encyclopedia: Scintillate