harmonic UK /hɑːˈmɒnɪk/US /hɑɹˈmɑnɪk/adjective 6noun 4forms 3 adjective6 •Pertaining to harmony. •Pleasant to hear; harmonious; melodious.harmonic twang of leather, horn, and brass. — 1728 •Used to characterize various mathematical entities or relationships supposed to bear some resemblance to musical consonance.The harmonic polar line of an inflection point of a cubic curve is the component of the polar conic other than the tangent line. •Recurring periodically. •Exhibiting or applying constraints on what vowels (e.g. front/back vowels only) may be found near each other and sometimes in the entire word. •Of or relating to a generation an even number of generations distant from a particular person. noun4 •A component frequency of the signal of a wave that is an integer multiple of the fundamental frequency. •The place where, on a bowed string instrument, a note in the harmonic series of a particular string can be played without the fundamental present. •One of a class of functions that enter into the development of the potential of a nearly spherical mass due to its attraction. •One's child.Games for the harmonics, (children), YL's and XYL's and the OM's, plus free soda for all. — 1967 formsharmonics · more harmonic · most harmonic