Encyclopedia
Ambo
Ambo (Greek: to ascend) - a raised platform located at the center of the church, part of the solium before the Royal Gates, intended for reading the Gospel, delivering sermons, and administering communion during the Liturgy
Source: "SP 31-103-99. Buildings, Structures, and Complexes of Orthodox Churches"
(adopted by Decree of the Russian State Construction Committee dated December 27, 1999 No. 92)