Definition of fulmineous in English:

fulmineous

adjective

rare
  • Of or relating to thunder and lightning; = fulminous.

Origin

Early 17th century; earliest use found in John Vicars (1580–1652), chronicler and poet. From classical Latin fulmineus belonging to or caused by lightning, like lightning or thunder, having the speed of lightning (from fulmin-, fulmen + -eus: see -eous) + -ous.