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subsonic

play
adjective sub·son·ic \ˌsəb-ˈsä-nik\

Simple Definition of subsonic

  • : slower than the speed of sound

Source: Merriam-Webster's Learner's Dictionary

Full Definition of subsonic

  1. 1 :  of, relating to, or being a speed less than that of sound in air

  2. 2 :  moving, capable of moving, or utilizing air currents moving at a subsonic speed

  3. 3 :  infrasonic 1

subsonically

play \-ni-k(ə-)lē\ adverb

Origin and Etymology of subsonic

International Scientific Vocabulary


First Known Use: 1937


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