<p><strong>Adjective</strong></p><ul><li>pertaining to harmony, as distinguished from melody and rhythm</li><li>marked by harmony; in harmony; concordant; consonant</li><li>Physics: of, relating to, or noting a series of oscillations in which each oscillation has a frequency that is an integral multiple of the same basic frequency</li><li>Mathematics: (of a set of values) related in a manner analogous to the frequencies of tones that are consonant; capable of being represented by sine and cosine functions</li><li>(of a function) satisfying the Laplace equation</li></ul><p><strong>Noun</strong></p><ul><li>Music: overtone</li><li>Physics: a single oscillation whose frequency is an integral multiple of the fundamental frequency</li></ul>