Pronunciation: (wāv'lengkth", -length", -lenth"), [key]
1. Physics. the distance, measured in the direction of propagation of a wave, between two successive points in the wave that are characterized by the same phase of oscillation.
2. on the same wavelength, in sympathy or rapport: We seemed to be on the same wavelength from the moment we met. Also,wave' length".
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.