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Vinony

transonic

adjective

  1. moving at close to the speed of sound
L44491 on Wikidata ↗

Wiktionary

adj

Etymology: Etymology tree English tran- Proto-Indo-European *swenh₂- Proto-Indo-European *swónh₂os Latin sonus Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English sonic English transonic From tran- + sonic.

  1. Just below, or just above, the speed of sound (0.8 < Ma < 1.2 approximately).
  2. Passing from subsonic to supersonic, or vice versa.
  3. Travelling 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.