Alto clef (Mus.) the counter-tenor clef, or the C clef, placed so that the two strokes include the middle line of the staff. Moore.
Al`to*geth"er (#), adv. [OE. altogedere; al all + togedere together. See Together.] 1. All together; conjointly. [Obs.]
Altogether they went at once.
Chaucer.