adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   equal to, or greater than, or capable of achieving, ten times the speed of sound. not-comparable
2. 2
   far enough above the speed of sound as to cause ionization of the air through shock heating deriving from the sonic shockwave, with resultant radio blackout, and plasma sheath surrounding the object travelling at speed not-comparable

Synonyms

All synonyms

transonic

Etymology

From plasma + sonic.

Related phrases

shock heatingspeed of sound

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.