transsonic
/trænsˈsɑnɪk/
adjective
- Relating to speeds close to the speed of sound (roughly between Mach 0.8 and Mach 1.2), where both subsonic and supersonic airflow occur.
- The aircraft experienced turbulence as it passed through the transsonic speed range.
- Many fighter jets are built to operate in the transsonic zone.
- Engineers study transsonic airflow to design more efficient wings.