Coruscation

Part of speech: noun (n.)

1. A sudden flash or play of light. A very vivid but exceeding short-lived splender, not to call coruscation. Boyle.

2. A flash of intellectual brilliancy. He might have illuminated his times with the incessant cor of his genius. I. Taylor.

Synonyms: Flash; glitter; blaze; gleam; sparkle.