The Collaborative International Dictionary
Referential \Ref`er*en"tial\ (-shal), a. Containing a reference; pointing to something out of itself; as, notes for referential use. -- Ref`er*en"tial*ly, adv.
Douglas Harper's Etymology Dictionary
1650s, from reference (n.) on model of inferential, etc. Related: Referentially.
Wiktionary
a. 1 Of a word or phrase applied to a particular person, place, or thing and not to any other. 2 Serving as a reference.
WordNet
adj. referring or pointing to something; "symbols are inherently referential"
Wikipedia
Usage examples of "referential".
In fact, he consistently suggests that individual words have a kind of lambency at the core that goes beyond their referential employment.
Some said that strange glowing beings from the Silicon Valley had wandered in overnight and started the baby dome, then infiltrated the Psychics, the Gaians, and the Extropians, whose neural architecture would be read into the Dome, become part of its exponentially growing referential power.
The database has all sorts of referential integrity checks built-in.