subsonic

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subsonic

Rhymes with -ɒnɪk

adjective

not comparable, of a sound having a frequency too low to be audible
literary, not comparable, of a sound 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)
not comparable, of a speed (aviation) less than the speed of sound (in the same medium, and at the same temperature and pressure) 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.
not comparable, of a flow with a Mach number such that 0.3 < Ma < 0.8 (approximately - the exact limits vary between sources)

noun subsonics

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

Translations

Every language

adj (of a speed) less than the speed of sound

Español	subsónico
中文	次音速 cìyīnsù
Português	subsónico, subsônico
Français	subsonique
Italiano	subsonico
Ελληνικά	υποηχητικός ypoïchitikós
Română	subsonic
Русский	дозвуково́й dozvukovój

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MLA

"subsonic." Wiktionary, via Micwyn, micwyn.com/word/subsonic. Accessed 6 Nov. 2026.

APA

subsonic. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/subsonic

Chicago

"subsonic." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/subsonic.

BibTeX

@misc{subsonic_2026,
  title = {subsonic},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/subsonic},
  urldate = {2026-11-06}
}