Hesychasterion

A hesychastarion is a small cell or hermitage where intensive hesychasm is practiced, distinct from the cenobitic hesychastic life of a monastery.

Legally and canonically, a hesychastarion is a hermitage established with the blessing of the diocesan bishop but owned by the monastics of the hermitage, as distinct from a monastery, which is owned by the bishop. Thus, the monastics at a hesychastarion have a greater degree of independence, but of course no liturgical services are celebrated there without the blessing of the bishop.