ful·mi·nate / ˈfoŏlməˌnāt; ˈfəl-/ • v. [intr.] express vehement protest: all fulminated against the new curriculum. ∎ poetic/lit. explode violently or flash like lightning: thunder fulminated around the house. ∎  [usu. as adj.] Med. (fulminating) (of a disease or symptom) develop suddenly and severely: fulminating appendicitis.• n. Chem. a salt or ester of fulminic acid.

fulminate thunder forth; orig. a rendering of medL. fulmināre, used spec. of formal censure by eccl. authority. XV. f. pp. stem of L. fulmināre, f. fulmen, -min- lightning; see -ATE3.
So fulmination XVI. — L.