sonic

Definition of Sonic in English :

1. sonic, transonic

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

Example Sentences:
'a sonic boom'

2. sonic

relating to audible sound

Example Sentences:
'a sonic wave'

WordNet Lexical Database for English. Princeton University. 2010.

Sonic

adjective

1.

of, involving, or producing sound

2.

having a speed about equal to that of sound in air: 331 metres per second (741 miles per hour) at 0°C

adjective

1.

of or having to do with sound

2.

designating or of a speed equal to the speed of sound (about 1,220 km per hour, or 760 mph, through air at sea level at room temperature)

adj.

1. Of or relating to audible sound: a sonic wave.

2. Having a speed approaching or being that of sound in air, about 1,220 kilometers (760 miles) per hour at sea level.

3. Slang Extremely exciting and fast-paced: a sonic lifestyle.