Definition of longitudinal wave in English:

longitudinal wave

Pronunciation /ˈˌlänjəˈt(y)o͞odnəl/ /ˈˌlɑndʒəˈt(j)udnəl/ /ˈˌlônjəˈt(y)o͞odnəl wāv/ /ˈˌlɔndʒəˈt(j)udnəl weɪv/

See synonyms for longitudinal wave

noun

Physics
  • A wave vibrating in the direction of propagation.

    ‘Since the motion of the medium at any point is a small vibration back and forth in the direction in which the wave is proceeding, sound is termed a longitudinal wave.’
    • ‘Doppler was incorrect regarding light being a longitudinal wave.’