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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. 2015.
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Examples from the Web for sonic
Contemporary Examples
Historical Examples
  • Below them a soft, barely audible whine ascended the sonic scale to a point of irritating inaudibility.

    The Lani People J. F. Bone
  • "No, it is not sonic control," Brucco answered with a sober face.

    Deathworld Harry Harrison
  • An accelerating, effortless flight, a faint tremor as they passed the sonic barrier, then no sensory impressions at all.

    The Mighty Dead William Campbell Gault
  • Ashe touched the find and then gave the alert via the sonic code.

    Key Out of Time Andre Alice Norton
  • Ross depended upon his sonic, but there was no adverse report from the sensitive recorder.

    Key Out of Time Andre Alice Norton
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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