wave front

Noun	1.	wave front - all the points just reached by a wave as it propagates propagation - the movement of a wave through a medium wave - a persistent and widespread unusual weather condition (especially of unusual temperatures)
	2.	wave front - (physics) an imaginary surface joining all points in space that are reached at the same instant by a wave propagating through a medium wavefront natural philosophy, physical science, physics - the science of matter and energy and their interactions surface - the extended two-dimensional outer boundary of a three-dimensional object; "they skimmed over the surface of the water"; "a brush small enough to clean every dental surface"; "the sun has no distinct surface"

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