Drehzahl

== German == === Etymology === From Dreh +‎ Zahl. === Pronunciation === === Noun === Drehzahl f (genitive Drehzahl, plural Drehzahlen) rotational speed, speed of rotation, (automotive) RPM, revolutions per minute Synonyms: Drehfrequenz, Umdrehungsfrequenz, Umlauffrequenz ==== Declension ==== === Further reading === “Drehzahl” in Duden online “Drehzahl”, in Digitales Wörterbuch der deutschen Sprache‎[1] (in German)