Musical prefix
A musical prefix is a numeral or other prefix used in music theory, specifically musical tuning.
| Prefix | Meaning (#) | Terms |
|---|---|---|
| Semi- / Half- | 1/2 | Semitone, halftone, semicomma, semiditone, semi-augmented (fourth), semi-diminished (fifth) |
| Tri- | 3 | Tritone, tritonic |
| Sept- | 7 | Septimal |
| Undec- | 11 | Undecimal |
| Tridec- | 13 | Tridecimal |
| Septen- | 17 | Septendecimal |
| Novendec- | 19 | Novendecimal |
| Milli- | 1000 | Millioctave |
| Dia- | through | Diaschisma, diatessaron, diapente, diapason |
| Di- | 2 | Diesis, ditone |
| En- | to make into, to put into, to get into | Enharmonic |
| Apo- | away, different from | Apotome |
| Im- | not | Imperfect (fourth) |
| Sesqui- | 1-1/2 | Sesquioctavan, sesquitertian, sesquialterate |