Definition:Proper Name

A proper name is a symbol used to identify a particular object uniquely.

Sometimes the terms individual constant or just constant are seen, as is parameter.

In contrast with natural language, a proper name has a wider range than being the particular identifying label attached to a person, or a place, etc. For example, "sloth" is a proper name for the concept of being lazy. "Rain" is the proper name for the meteorological phenomenon of water falling from the sky.