converter

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun One that converts, especially.
• noun A furnace in which pig iron is converted into steel by the Bessemer process.
• noun A machine that converts electric current from one kind to another.
• noun An electronic device that converts one frequency of a radio signal to another.
• noun A device that converts data from one code to another.
• noun One that is employed in converting raw products into finished products.

from The Century Dictionary.

• noun One who converts; one who makes converts.
• noun A vessel in which metals or other materials are changed or converted from one shape or condition to another.
• noun In electricity, an apparatus for changing electric power into a different form by mechanical motion.

from the GNU version of the Collaborative International Dictionary of English.

• noun One who converts; one who makes converts.
• noun (Steel Manuf.) A retort, used 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A person or thing that converts.
• noun A retort, used 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.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a device for changing one substance or form or state into another