Main Entry:

son·ic

Pronunciation:

\ˈsä-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 vibrations3: 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-)lē\ adverb