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🇫🇷French Source WordCode: FR

vitesse subsonique

Pronunciation / Transliteration: vit-ɛs syp.sɔ.nik

🇬🇧 Direct English Meaning:
Subsonic-speed/ˈsʌb.sɒn.ɪk spiːd/
nounadjectiveCEFR C1 (Advanced)Top #14500 frequency
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🇫🇷 Example Sentence in French:

"L'avion vole à une vitesse subsonique."

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A rate of motion that is less than the speed of sound in a given medium, typically air.

    "The commercial airliner cruised comfortably at subsonic speed across the continent."
As adjective
  1. 1

    Operating or traveling at a speed slower than the speed of sound.

    "Subsonic-speed aircraft generally produce less severe shockwaves compared to supersonic jets."
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Thesaurus & Semantic Spectrum

Synonyms (2)
Antonyms & Contrasting Words (2)

Linguistic Origin & Historical Etymology

Derived from the Latin prefix 'sub-' meaning 'under' or 'below', combined with 'sonic' from Latin 'sonus' meaning 'sound', and 'speed' from Old English 'spēd' meaning success or swiftness. The compound emerged in the mid-20th century during the rapid development of aeronautics and jet propulsion to describe rates of travel lower than the speed of sound.

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