from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A musical interval of the Western twelve-semitone system consisting of four semitones and spanning three degrees of the diatonic scale. Major scales are so named because of the major third interval between the tonic and mediant of a major tonic triad. It is enharmonically equivalent to a diminished fourth.
from the GNU version of the Collaborative International Dictionary of English
- a third of two steps.
- n. an interval of two tones.
Sorry, no etymologies found.