Back سرعة غريبة Arabic অদ্ভুত বেগ Bengali/Bangla Pekuliarhastighed Danish Pekuliargeschwindigkeit German Stranga rapido Esperanto سرعت ویژه Persian Vitesse particulière French Պեկուլյար արագություն Armenian Velocità peculiare Italian 특이운동 Korean
Peculiar motion or peculiar velocity refers to the velocity of an object relative to a rest frame — usually a frame in which the average velocity of some objects is zero.