Definition of archicembalo in English:

archicembalo

Pronunciation /ˌɑːkɪˈtʃɛmbələʊ/

noun

(also arcicembalo)
Music
  • Any of various types of harpsichord having more than twelve keys to the octave and therefore capable of producing intervals smaller than a semitone; a microtonal or enharmonic harpsichord.

    The first such instrument was designed by Nicolà Vicentino (1511–76), Italian musical theorist, in order to reproduce the intervals of the ancient Greek modes in their different genera, and to enable polyphonic music in imitation of these to be played on a keyboard instrument without introducing incorrect intervals.

Origin

Late 18th century; earliest use found in John Hawkins (1719–1789), music scholar and lawyer. From Italian archicembalo large harpsichord having more than twelve keys to the octave from archi- + cembalo.