plural of locking room

(automotive) A kind of automotive differential that provides increased traction by restricting each of the two wheels on an axle to the same rotational speed without regard to available traction or differences in resistance seen at each wheel.

plural of locking differential

(astronomy) The locking of the rotation of a satellite (moon or planet) to its orbit, such that one side always faces the body around which it is orbiting.

A thixotropic liquid applied to screw threads that keeps them from loosening.

plural of thread-locking fluid

plural of staircase lock

A set of locks on a waterway canal which rise steeply, and consisting of lock gates where the top gate of one lock is also the bottom gate of the next lock, not having a pound between each level.

plural of lock-in

(medicine, neurology) A rare, severe physical disorder in which a person cannot speak and is paralyzed—with the possible exception of some voluntary eye movement—while their mental faculties remain fully intact.