coruscation

noun

Etymology: Borrowed from Latin coruscātiōnem, coruscātiō (“glitter, flash”).

1. A sudden display of brilliance; a flashing of light; a sparkle.

   “[I]n the dusky galleries, duskier with unwashed heads, is a strange 'coruscation,'—of impromptu billhooks.”

   “The one, as a brilliant coruscation playing in a summer sky, might enchant the fancy and ensure the suffrage of a moment; the other, as a lovely constellation, though less vivid, yet from its undeviating steadfastness never failed to leave upon the observer impressions more truly gratifying, solid, and lasting.”