cantoris

adj

1. (not-comparable)Of the side of the chancel, apse, altar or choir on which the cantor's (later precentor's) stall is placed (the left hand side to a person facing the altar);

   “the cantoris side of a choir; a cantoris stall”

   “one accompanyist, let us suppose him seated on the Cantoris side, facing the Decani Organ[…]”

noun

1. The lower of two choral voice parts sung when a part splits into two; traditionally sung by members of the choir on the cantoris side.

   “All the extant voices participate fully in the decani-cantoris split at that point, so one is tempted to assume that the tenors split into decani and cantoris parts as well.”

2. That half of the choir singing cantoris parts, collectively.