• synonyms


  1. an echoic word, the referent of which is a tone interval approximately three times the length of the dot, used to designate the dash of Morse code, International Morse code, etc.
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Compare dit.

Origin of dah

First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for dah

Historical Examples of dah

  • What prophet warned the people by Jū´dah of evils that were coming?

    Hurlbut's Bible Lessons

    Rev. Jesse Lyman Hurlbut

  • If of that size, it is called a dah dar dah, (literally 10 x 10).

  • “I am the Rajah of Dah now,” said the Malay chief with a touch of hauteur in his tones.

    The Rajah of Dah

    George Manville Fenn

  • I asked, pointing to the mound with the betel-box and “dah.”

  • How did the conduct of the kings of Ju´dah bring on the captivity?

British Dictionary definitions for dah


  1. the long sound used in combination with the short sound dit, in the spoken representation of Morse and other telegraphic codesCompare dash 1 (def. 14)
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012