keyidentifier
nounUK /ˈkiː aɪˌdɛntɪfaɪə/
US /ˈkiː aɪˌdɛntəfaɪər/
A key identifier is a special name or number that helps you find or recognize something.
Your student ID is a key identifier that lets the school know who you are.
SYNONYMS
OTHER MEANINGS
2. In computing, a value used to uniquely locate a record in a database.
The customer's email address serves as a key identifier in the database.
3. A main clue or feature that helps identify a person, place, or thing.
The bright red door was a key identifier of the correct house.
4. A symbol or code on a map or chart that explains what things mean.
The map's key identifier shows that blue lines are rivers.