Tri-fo′ri-um
,
[LL., fr. L.
tri-
(see
Tri-
) +
foris
, pl.
fores
, a door.]
(Arch.)
The gallery or open space between the vaulting and the roof of the aisles of a church, often forming a rich arcade in the interior of the church, above the nave arches and below the clearstory windows.