Definition of fulminator in US English:



  • 1(An epithet or title of) the Roman god Jupiter as controller of the weather. Chiefly with capital initial.

  • 2A person who fulminates or forcibly criticizes or denounces.

  • 3A compound or device that can be used to produce a small explosion.


Early 17th century; earliest use found in Samuel Purchas (bap. 1577, d. 1626), geographical editor and compiler and Church of England clergyman. Originally from classical Latin fulminātor (as a title of Jupiter) hurler of thunderbolts (2nd cent. a.d.) from fulmināt-, past participial stem of fulmināre + -or.