travelling wave

== English == === Alternative forms === traveling wave === Noun === travelling wave (plural travelling waves) (physics) A wave that is not bounded by a given space, but can propagate freely. Antonym: standing wave (physics) A wave in which the vibration is in the direction of propagation; a longitudinal wave. Antonym: transverse wave ==== Derived terms ==== travelling wave reactor travelling-wave tube ==== Translations ====