Phosphide is a chemical compound containing phosphorus and a metal element. Some of the synonyms for this word are metal phosphide, phosphorous alloy, phosphorodiide, and phosphane. Metal phosphide is a common name used to describe a phosphide compound consisting of any metal and phosphorus. Phosphorous alloy is also a synonym commonly used to describe this compound. Phosphorodiide refers to a phosphide compound used in electronic devices while phosphane is a term used to describe the general structure of a phosphorous compound. These synonyms are often used interchangeably to refer to the same chemical compound.