subsonic

/ˌsʌbˈsɒnɪk/ (bre, ipa) · /ˌsʌbˈsɑːnɪk/ (ame, ipa) · /ˌsəb-ˈsä-nik How to pronounce subsonic (audio)/ (ame, mw)

subsonic — adjective

  • subsonicpositive
  • more subsoniccomparative
  • most subsonicsuperlative

1. traveling at a speed below the speed at which sound moves through the air — roug

1.形容詞B2
釋義

traveling at a speed below the speed at which sound moves through the air — roughly 1,235 km/h or 767 mph at sea level; designed or used for such speeds.

例句

The Boeing 777 flies at subsonic speeds, making it quieter inside than a supersonic jet.

collocation: subsonic speeds

Engineers at Aylin's company are testing a new subsonic drone for package delivery.

subsonic + noun describing aircraft

反義詞
  • supersonic

    traveling at a speed faster than the speed of sound

  • hypersonic

    traveling at speeds five or more times the speed of sound

文法句型

subsonic + noun

用法筆記

Commonly describes aircraft, flight, airflow, and projectiles. Contrasts directly with supersonic (faster than sound) and hypersonic (many times faster than sound).

常見錯誤

❌The subsonic plane broke the sound barrier.
✅The supersonic plane broke the sound barrier.
💡only craft traveling faster than sound can break it; subsonic means below the speed of sound.
❌I could not hear the subsonic music.
✅I could not hear the infrasonic sound.
💡subsonic refers to speed below sound, not to frequency below human hearing; the correct term for very low frequencies is infrasonic.