[ 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

mul·ti·son·ic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sonic

British Dictionary definitions for sonic


/ (ˈsɒnɪk) /


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 for sonic

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

Medicine definitions for sonic


[ sŏnĭk ]


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.