- high.
- in the first octave above the treble staff.
- variant of alti- before a vowel: altazimuth.
- a combining form of alternative, used in compound words describing a nontraditional or unconventional version within a genre or category, often something provocative, subversive, or innovative: alt-country bands; the alt-right movement;alt-weeklies;writers of alt-lit;quinoa and other alt-grains.
- alteration.
- alternate.
- altitude.
- alto.
- (esp of vocal music) high in pitch
- of or relating to the octave commencing with the G above the top line of the treble staff
- in the octave directly above the treble staff
