The shape of a wave at any moment, or that of the graphical representation of a (usually periodically) varying physical quantity; a wave regarded…

The distance between successive peaks or maxima of a wave; esp. this as a distinctive feature of the radio waves used to carry a particular…

the continuous line or surface including all the waves or radiatory emissions which are in the same phase.

each of the imaginary concentric spherical layers in any medium traversed by a wave, such that the vibration of the particles of the layer is…

= phase velocity n. at phase, n.2 compounds 2.

the period between the arrival at a given point of successive maxima of a travelling wave.

Electronics. A brief variation in current or voltage caused by a surge in power, the connection of a load, etc.

the speed of propagation of a sine wave or a sinusoidal component of a complex wave, equal to the product of its wavelength and frequency; cf. grou…

Physics. The property (of waves, or of phenomena involving them) of being incoherent (sense 5); lack of a definite or stable phase relationship…

= waveform, n.