sub-sonicとは 意味・読み方・使い方

語源

From sub- +‎ sonic.

発音

• 韻: -ɒnɪk

形容詞

subsonic (not comparable)

1. (of a sound, scientific) having a frequency too low to be audible
2. (of a sound, literary) very quiet, almost inaudible

   The noise of the ship was all around her. The faint subsonic rumble of the reactor and drive. (Leviathan Wakes, James S. A. Corey)

3. (of a speed) (aviation) less than the speed of sound (in the same medium, and at the same temperature and pressure)
   • 2020 February 9, Alina Selyukh, “British Airways Sets Record, Crossing The Atlantic In Under 5 Hours In Strong Winds”, in NPR:

     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.

4. (fluid mechanics, of a flow) with a Mach number such that 0.3 < Ma < 0.8 (approximately - the exact limits vary between sources)

派生語

関連する語

名詞

subsonic (plural subsonics)

1. an aircraft whose maximum speed is less than the speed of sound