/ Dictionary / Index A anharmonic: Meaning and Definition of Find definitions for: an•har•mon•ic Pronunciation: (an"här-mon'ik), [key] — adj. Physics. of or pertaining to an oscillating system that is not undergoing simple harmonic motion. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Anhalt anharmonic ratio Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language