sonic
adj
1 of, involving, or producing sound
2 having a speed about equal to that of sound in air: 332 metres per second (743 miles per hour) (C20: from Latin sonus sound)
sonic barrier
n another name for →
sound barrier
sonic boom
n a loud explosive sound caused by the shock wave of an aircraft, etc., travelling at supersonic speed
sonic depth finder
n an instrument for detecting the depth of water or of a submerged object by means of sound waves; Fathometer
See also →
sonar