the flash of light that accompanies an electric discharge in the atmosphere (or something resembling such a flash); can scintillate for a second or more
abrupt electric discharge from cloud to cloud or from cloud to earth accompanied by the emission of light
having a habit of long standing; "a chronic smoker"
of persons; not subject to change; "a confirmed bachelor"; "a confirmed invalid"
having been established or made firm or received the rite of confirmation; "confirmed reservations"; "received confirmed reports of casualties"; "a confirmed Catholic"