Adytum

·noun The innermost sanctuary or shrine in ancient temples, whence oracles were given. Hence: A private chamber; a sanctum.

adytum
ădytum, i, n., = ἄδυτον (not to be entered), the innermost part of a temple, the sanctuary, which no...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
adytum
adytum ī, n , ἄδυτον. — Usu. plur, the inmost recess, holiest place: adyti incola, H.: penetralia, ...

An Elementary Latin Dictionary