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[son-ik] /ˈsɒn ɪk/
of or relating to sound.
noting or pertaining to a speed equal to that of sound in air at the same height above sea level.
Origin of sonic
1920-25; < Latin son(us) sound1 + -ic
Related forms
multisonic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for sonic
Contemporary Examples
Historical Examples
  • Like a sonic direction finder, Buregarde turned his head and listened.

    History Repeats George Oliver Smith
  • "No, it is not sonic control," Brucco answered with a sober face.

    Deathworld Harry Harrison
  • Ashe touched the find and then gave the alert via the sonic code.

    Key Out of Time Andre Alice Norton
  • Loy's box, with its recorded English words and its sonic detectors, could translate for its master, too.

    The Eternal Wall Raymond Zinke Gallun
  • Then they tried other weapons—pistols, sonic beams, grenades—but always wearing protective equipment.

    The Dueling Machine Benjamin William Bova
British Dictionary definitions for sonic


of, involving, or producing sound
having a speed about equal to that of sound in air: 331 metres per second (741 miles per hour) at 0°C
Word Origin
C20: from Latin sonus sound
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
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Word Origin and History for sonic

1923, from Latin sonus "sound" (see sound (n.1)) + -ic. Sonic boom is attested from 1952.

Online Etymology Dictionary, © 2010 Douglas Harper
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sonic in Medicine

sonic son·ic (sŏn'ĭk)
Of, relating to, or determined by audible sound.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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