son·ic /ˈsɑnɪk/
  (a.)音波的,音速的,聲音的
  son·ic /ˈsɑnɪk/ 形容詞
  聲音的,聲波的
  sonic
  聲
  sonic
       adj 1: (of speed) having or caused by speed approximately equal to
              that of sound in air at sea level; "a sonic boom"
              [syn: transonic] [ant: subsonic, supersonic]
       2: relating to audible sound; "a sonic wave"