noun
1. : the reciprocal of the arithmetic mean of the reciprocals of two or more quantities
2. : one of the terms between the first and last terms of a harmonic progression
noun
1. : the reciprocal of the arithmetic mean of the reciprocals of two or more quantities
2. : one of the terms between the first and last terms of a harmonic progression
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012