Meaning of fulgurous

(adj) amazingly impressive; suggestive of the flashing of lightning; "the skater's dazzling virtuosic leaps"; "these great best canvases still look as astonishing and as invitingly new as they did...when...his fulgurant popularity was in full growth"- Janet Flanner; "adventures related...in a style both vivid and fulgurous"- Idwal Jones