ˈtranˌsept, ˈtraan- noun
( -s )
Etymology: New Latin transeptum, from Latin trans- + septum, saeptum enclosure, wall — more at septum
: the transversal part of a cruciform church that crosses at right angles to the greatest length between the nave and the apse or choir ; also : either of the projecting ends
the north transept
— see basilica illustration