to issue denunciations or the like (usually fol. by against): The minister fulminated against legalized vice.
–verb (used with object)
3.
to cause to explode.
4.
to issue or pronounce with vehement denunciation, condemnation, or the like.
–noun
5.
one of a group of unstable, explosive compounds derived from fulminic acid, esp. the mercury salt of fulminic acid, which is a powerful detonating agent.
Origin: 1375–1425; late ME fulminaten < L fulminātus (ptp. of fulmināre) thundered, equiv. to fulmin- (s. of fulmen) thunderbolt, lightning + -ātus-ate1
ful·mi·nate (fŏŏl'mə-nāt', fŭl'-) v.
ful·mi·nat·ed, ful·mi·nat·ing, ful·mi·nates
v.
intr.
To issue a thunderous verbal attack or denunciation: fulminated against political chicanery.
To explode or detonate.
v.
tr.
To issue (a denunciation, for example) thunderously.
To cause to explode.
n. An explosive salt of fulminic acid, especially fulminate of mercury.
[Middle English fulminaten, from Latin fulmināre, fulmināt-, to strike with lightning, from fulmen, fulmin-, lightning that strikes; see bhel-1 in Indo-European roots.] ful'mi·na'tion n., ful'mi·na'tor n., ful'mi·na·to'ry (-nə-tôr'ē, -tōr'ē) adj.
[fuhl-muh-neyt] 
verb, -nat⋅ed, -nat⋅ing, noun 