What does subsonic mean?
Subsonic means (of a sound, scientific) having a frequency too low to be audible.
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Pronunciation varies by accent · adjective
(of a sound, scientific) having a frequency too low to be audible.
The noise of the ship was all around her. The faint subsonic rumble of the reactor and drive. (Leviathan Wakes, James S. A. Corey)
But British Airways Flight 112 made the trek in under five hours, setting a new record for the fastest subsonic commercial flight across the Atlantic Ocean.
Use subsonic when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Subsonic means (of a sound, scientific) having a frequency too low to be audible.
The closest synonym depends on the sentence and intended sense.
Possible antonyms include transonic, supersonic, sonic.
The noise of the ship was all around her. The faint subsonic rumble of the reactor and drive. (Leviathan Wakes, James S. A. Corey)
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