Wavefronts

Part of speech: noun

Definitions

1. A boundary of a wave that encompasses the points of equal phase at a given time, representing the progression of energy through a medium
2. The leading edge of a wave as it travels through space, where all particles are in a specific phase of oscillation at that moment
3. An imaginary surface connecting points of the same phase in a wave, illustrating how disturbances propagate through a physical medium

Etymology: "Wavefronts" is simply the plural of "wavefront," a compound formed from "wave" and "front." The sense is literal: the leading edge of a moving wave, the line where the disturbance is pushing into still water or still air, which is how the physics term grew out of the everyday picture of a front advancing across a surface. The plural form follows the regular English pattern, adding "-s" to the noun. Its two parts, "wave" and "front," each carry their own long histories in English, but the compound itself is a plain combination of those two familiar words rather than a borrowing or a coinage with a famous originator.

Synonyms: wave boundaries