See under .
any one of three laws governing planetary motion: each planet revolves in an ellipse, with the sun at one focus; the line connecting a planet to the sun sweeps out equal areas in equal periods of time (law of areas) or the square of the period of revolution of each planet is proportional to the cube of the semimajor axis of the planet’s orbit (harmonic law)
noun, Statistics. 1. the mean obtained by taking the reciprocal of the arithmetic mean of the reciprocals of a set of nonzero numbers. noun 1. the reciprocal of the arithmetic mean of the reciprocals of a set of specified numbers: the harmonic mean of 2, 3, and 4 is 3(1/2 + 1/3 + 1/4)–1 = […]
noun, Music. 1. (def 1). noun 1. (music) a minor scale modified from the state of being natural by the sharpening of the seventh degree Compare minor, melodic minor scale
noun, Physics. 1. periodic motion consisting of one or more vibratory motions that are symmetric about a region of equilibrium, as the motion of a vibrating string of a musical instrument. noun 1. a periodic motion in which the displacement is symmetrical about a point or a periodic motion that is composed of such motions […]
[hahr-mon-i-kuh n] /hɑrˈmɒn ɪ kən/ noun 1. (def 1). 2. .