A ___________ door is a door that swings in two directions.

A door that swings in two directions is referred to as a double acting door. This type of door is designed to allow entry and exit from both sides without needing to be pulled or pushed in just one direction. It typically consists of a pivot mechanism at the hinges that enables the door to move freely in both directions, making it ideal for high-traffic areas, such as restaurants or cafes, where ease of access is important.

In contrast, a French door typically consists of two hinged doors that open inwards or outwards, but they do not swing in both directions. Sliding doors operate by moving along a track and do not swing at all. Hinged doors only swing in one direction based on the positioning of their hinges, limiting their accessibility. Thus, the term double acting distinctly describes a particular type of door functionality not found in the other options.