WordReference Random House Unabridged Dictionary of American English © 2025
longitu′dinal wave′, [Physics.]
  1. Physicsa wave in which the direction of displacement is the same as the direction of propagation, as a sound wave. Cf. transverse wave. 
  • 1930–35

Collins Concise English Dictionary © HarperCollins Publishers::
longitudinal wave
  1. a wave that is propagated in the same direction as the displacement of the transmitting medium
    Compare transverse wave
'longitudinal wave' also found in these entries (note: many are not synonyms or translations):
sound wave - transverse wave - wave

Forum discussions with the word(s) "longitudinal wave" in the title:


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