transonic

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adjective

Just below, or just above, the speed of sound (0.8 < Ma < 1.2 approximately).

Similar
sonic
OriginEnglish sonic ← Latin sonus ← Proto-Indo-European *swónh₂os →
UncommonScrabble 11
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Meanings

adjectivetransonic (not comparable)

alternative transsonic

  1. not comparableJust below, or just above, the speed of sound (0.8 < Ma < 1.2 approximately).
  2. not comparablePassing from subsonic to supersonic, or vice versa.
  3. not comparableTravelling through a fluid (commonly air) at a speed where regions of supersonic and subsonic flow coexist simultaneously over different portions of the surface of the moving object in question.

Synonyms & antonyms

adjective(of speed) having or caused by speed approximately equal to that of sound in air at sea level

Similar
sonic
Also see
sonic

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Englishtran-
  2. Proto-Indo-European*swenh₂-
  3. Proto-Indo-European*swónh₂os
  4. Latinsonus
  5. Englishsonic
  6. Englishtransonic

From tran- + sonic.

Full word history & related roots →

Translations

Finnish transooninen, lähellä äänen nopeutta
  • transooninenjust above or below the speed of sound
  • lähellä äänen nopeuttajust above or below the speed of sound
French transsonique
  • transsoniquejust above or below the speed of sound
Italian transonico
  • transonicojust above or below the speed of sound

Rhymes & wordplay

Anagrams

constrainintroscannonracist
Cite this entry
APA

transonic. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/transonic

MLA

“transonic.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/transonic. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “transonic,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/transonic.

Source: transonic on Wiktionary, CC BY-SA 4.0.