from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A funnel-shaped device used to direct and amplify the voice.
  • transitive v. To transmit (a message) or speak through or as if through a funnel-shaped voice amplification device.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A portable, usually hand-held, funnel-shaped device that is used to amplify a person’s natural voice toward a targeted direction.
  • v. To use a megaphone.
  • n. a cytotoxic neolignan obtained from the laurel aniba megaphylla

from the GNU version of the Collaborative International Dictionary of English

  • n. A device to magnify sound, or direct it in a given direction in a greater volume, as a very large funnel used as an ear trumpet or as a speaking trumpet.

from The Century Dictionary and Cyclopedia

  • n. An instrument devised by Edison for assisting hearing, adapted for use by deaf persons or for the perception of ordinary sounds at great distances.
  • n. A large speaking-trumpet of a conical form.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a cone-shaped acoustic device held to the mouth to intensify and direct the human voice


from Wiktionary, Creative Commons Attribution/Share-Alike License

From mega- +‎ phone.



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  • 1 megaphone = 10^^12 microphones

    February 23, 2008