noun

• A person or thing that converts.
• (electrical engineering) A device that changes voltage or frequency, for example one that converts alternating current to direct current.
• (metallurgy) A retort or furnace, used e.g. in the Bessemer process, in which molten cast iron is decarburized and converted into steel by a blast of air forced through the liquid metal.
• A reaction chamber in which exhaust gases are catalytically converted to carbon dioxide
• (computing) A program that converts one file format to another one, or which converts between different units of measurement, such as miles to meters.
• (medicine) A patient with a certain condition that subsequently develops into another condition.
• A device that converts an analogue to a digital signal, or vice versa.
• (Southern Ontario, slang) Regional term for remote control.