ausbreitenden
Ausbreitenden is the present participle form of the German verb ausbreiten, meaning to spread or extend. Used as an attributive adjective, it conveys the sense of something that is spreading or expanding. The term appears across scientific and technical contexts as well as in general prose, for example in phrases like eine ausbreitende Welle (an expanding wave) or der ausbreitende Prozess (the spreading process).
Grammatically, ausbreitenden is inflected like a normal German adjective. With a definite article, you encounter endings
Contexts and usage: in physics and geology, ausbreitende Wellenfronten or ausbreitende Fronten describe wavefronts or fronts
Etymology: formed from the prefix aus- (out, away) and breiten (to widen, to spread) plus the present