backplate

== English == === Etymology === From back +‎ plate. === Noun === backplate (plural backplates) A plate protecting a fighting person's back. (underwater diving) A plate harnessed to a diver's back, to which the gas cylinders are attached. The metal plate on the rear of a computer's casing, where the ports are found. A wood or metal (or glass, etc) plate that serves as a backing for an object. (UK, automotive) A rigid metal plate inside the brake drum, which supports the wheel cylinder, brake shoes, and other parts of a drum brake. Part of a condenser microphone that sits behind the diaphragm and which acts, in conjunction with the diaphragm, as a sort of variable capacitor. ==== Derived terms ==== backplated