identifier

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Definitions from WordNet

Noun identifier has 1 sense

identifier - a symbol that establishes the identity of the one bearing it
--₁ is a kind of symbol

Definitions from the Web

Identifier

Noun:

1. A word, number, or symbol that identifies something or someone.

Example sentence: The social security number serves as a unique identifier for each individual.

Noun:

2. In programming, a name given to a variable, constant, or function to identify it.

Example sentence: The programmer used a descriptive identifier for the new variable.

Noun:

3. In database systems, a field or combination of fields used to uniquely identify a record.

Example sentence: The primary key serves as an identifier for each record in the database table.

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