A device for uncoupling machinery in the event of a sudden stoppage.

plural of ratchet coupling

plural of coupling rod

(rail transport) A rod that couples the driving wheels of a locomotive, a steam locomotive in particular, so that the driving wheels act together as a unit.

Alternative form of couple three

(colloquial, US) Two or three or a similarly small number of.

plural of Sonogashira coupling

(organic chemistry) A crosscoupling reaction used in organic synthesis to form carbon–carbon bonds. It employs a palladium catalyst as well as copper co-catalyst to form a carbon–carbon bond between a terminal alkyne and an aryl or vinyl halide.

A form of therapy or counseling that attempts to improve a romantic relationship between two people and resolve any interpersonal conflicts within it.

plural of couples therapy