[ suhb-son-ik ]
/ sʌbˈsɒn ɪk /
noting or pertaining to a speed less than that of sound in air at the same height above sea level.
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Origin of subsonic
1940–45; sub- + -sonic
OTHER WORDS FROM subsonicsub·son·i·cal·ly, adverb
Words nearby subsonic
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Example sentences from the Web for subsonic
British Dictionary definitions for subsonic
/ (sʌbˈsɒnɪk) /
being, having, or travelling at a velocity below that of sounda subsonic aircraft
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
Scientific definitions for subsonic
[ sŭb-sŏn′ĭk ]
Having a speed less than that of sound in a designated medium, usually air; having a velocity less than Mach 1. Compare hypersonic supersonic transonic.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.