noun An act of refuting or disproving; the disproving of an argument, opinion, testimony, doctrine or theory by argument or countervailing proof; evidence of falseness.
noun A vocal answer to an attack on one's assertions.
noun ↑ William Dwight Whitney, Benjamin Eli Smith, editors (1895–1910), “refutation”, in The Century Dictionary […], New York, N.Y.: The Century Co., →OCLC.
noun 1 2 “refutation”, in The American Heritage Dictionary of the English Language, 5th edition, Boston, Mass.: Houghton Mifflin Harcourt, 2016, →ISBN.