| 1. | pertaining to harmony, as distinguished from melody and rhythm. |
| 2. | marked by harmony; in harmony; concordant; consonant. |
| 3. | Physics. of, pertaining to, or noting a series of oscillations in which each oscillation has a frequency that is an integral multiple of the same basic frequency. |
| 4. | Mathematics.
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| 5. | Music. overtone (def. 1). |
| 6. | Physics. a single oscillation whose frequency is an integral multiple of the fundamental frequency. |