AMBO, or AMBO, a kind of pulpit or desk in the ancient churches, where the priests and deacons stood to read or sing part of the service, and preach to the people; called also Analogium. The term is derived from ambo, to mount. The ambo was mounted upon two sides; whence some also derive the appellation from the Latin ambo, both. The ambo was ascended by steps; which occasioned that part of the office performed there to be called the Gradual. The modern reading-desks and pulpits have been generally substituted for the ancient ambo; though in some churches remains of the ambo are still seen. In that of St John Lateran at Rome there are two moveable ambo.