subsonic

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English

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Etymology

From sub- +‎ sonic.

Pronunciation

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Adjective

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

Translations

Noun

subsonic (plural subsonics)

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

Romanian

Etymology

Borrowed from French subsonique.

Pronunciation

Adjective

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

  1. subsonic
    Synonym: subacustic
    Antonym: hipersonic

Declension

Declension of subsonic
singular plural
masculine neuter feminine masculine neuter feminine
nominative-
accusative
indefinite subsonic subsonică subsonici subsonice
definite subsonicul subsonica subsonicii subsonicele
genitive-
dative
indefinite subsonic subsonice subsonici subsonice
definite subsonicului subsonicei subsonicilor subsonicelor