sonic

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

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

From Latin sonus + -ic.

Sonic echoes alone can kill, and in a pressurized compartment blowups happen. — Space Station 1, Frank Belknap Long
The following letters give sonic notion of a day's occupation at that time:(3) [31] ii. — Meditations, Emperor of Rome Marcus Aurelius
At which point we both slipped and collapsed in a patch of snow ... just as the last fuel tank detonated with the impact of a sonic boom. — The Samurai Strategy, Thomas Hoover

transonic

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