active door

active door

[′ak·tiv ′dȯr] (building construction) active leaf

active door

In a pair of doors, the leaf, 1 that is the first to open and is the leaf to which a lock is applied.

active leaf, active door

In a door having a pair of leaves, that leaf to which the latching or locking mechanism is attached; usually the leaf that is permitted to open first; sometimes both leaves are active.