adj.
Pronunciation: ' sä-nik
Function: adjective
Date: 1923
1 : utilizing, produced by, or relating to sound waves < sonic altimeter> broadly : of or involving sound < sonic pollution>
2 : having a frequency within the audibility range of the human ear ― used of waves and vibrations
3 : of, relating to, or being the speed of sound in air or about 761 miles per hour (1224 kilometers per hour) at sea level at 59°F (15°C)
– son · i · cal · ly \ -ni-k( ə -)l ē \ adverb