noun
: an epicyclic train in which the first and last wheels revolve on the same axis so that when these two wheels are nearly equal a very slow relative rotation is secured
noun
: an epicyclic train in which the first and last wheels revolve on the same axis so that when these two wheels are nearly equal a very slow relative rotation is secured
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012