major third (plural major thirds)
- (music) 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.
- The major third has a pitch ratio close to 34:27.
interval of four semitones
- Mandarin: 大三度 (zh) (dàsāndù)
- Finnish: suuri terssi
- French: tierce majeure f
- German: große Terz f
- Greek: τρίτη μεγάλη f (tríti megáli)
- Icelandic: stór þríund f
- Italian: terza maggiore f
- Japanese: 長三度 (ja) (chōsando)
- Polish: tercja wielka f
- Russian: больша́я те́рция f (bolʹšája tɛ́rcija)
- Swedish: stor ters c, durters c