Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"Subsonic" Definition
adjective
Having a speed less than that of sound in a designated medium.
Source: American Heritage Dictionary
Of less than audible frequency.
Source: American Heritage Dictionary
Moving, capable of moving, or utilizing air currents moving at a subsonic speed.
Source: Merriam-Webster
Of, relating to, or being a speed less than that of sound in air.
Source: Merriam-Webster
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