The phase velocity of a wave is the rate at which the phase of the wave propagates in space. This is the velocity at which the phase of any one frequency component of the wave travels. For such a component, any given phase of the wave (for example, the crest) will appear to travel at the phase velocity. The phase velocity is given in terms of the wavelength. Wikipedia, Phase Velocity
See Also
Aliquot
Figure 8.14 - Some Basic Waveforms and their constituent Aliquot Parts
Modes of Vibration
Phase