[son.ic] adj (1923) 1: utilizing, produced by, or relating to sound waves "~ altimeter"; broadly: of or involving sound "~ 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 degrees F (15 degrees C)
4: capable of uttering sounds -- son.i.cal.ly adv