subsonic

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English[edit]

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Pronunciation[edit]

Etymology[edit]

sub- +‎ sonic

Adjective[edit]

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) less than the speed of sound (in the same medium, and at the same temperature and pressure)
  4. (fluid mechanics, of a flow) with a Mach number such that 0.3 < Ma < 0.8 (approximately - the exact limits vary between sources).

Related terms[edit]

Translations[edit]

Noun[edit]

subsonic (plural subsonics)

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

Romanian[edit]

Etymology[edit]

Borrowing from French subsonique.

Pronunciation[edit]

Adjective[edit]

subsonic m, n (feminine singular subsonică, masculine plural subsonici, feminine and neuter plural subsonice)

  1. subsonic

Declension[edit]

Synonyms[edit]

Antonyms[edit]