Definition

1. Noun:
   • A symbol that establishes identity: An identifier is a unique name, label, number, or other symbol used to distinguish and establish the identity of a specific person, object, concept, or data element within a defined system or context.

Usage

• An is used to name and reference a distinct entity. It is a fundamental concept in systems of organization, record-keeping, and computing.
• In everyday contexts, it often refers to official documents like ID cards. In technical fields like programming and databases, it refers to the names given to variables, functions, or records.

Examples

• Noun:
  • Your passport number is a unique identifier issued by the government.
  • In this software, each customer record has a unique numeric identifier.
  • The scientist used a genetic marker as an identifier for the specific plant species.

Advanced Usage

• "Unique identifier": A specific identifier that is guaranteed to be singular within a system, ensuring no two items share the same label.
  • The database uses a social security number as the primary unique identifier for each citizen.
• "To serve as an identifier": To function as the distinguishing symbol.
  • The barcode on the product serves as its primary identifier in the inventory system.

Variants and Related Words

• Identify (verb): To establish or indicate who or what someone or something is.
  • The witness was able to identify the suspect.
• Identification (noun): The action or process of identifying someone or something, or the evidence itself.
  • You must show identification to enter the building.

Synonyms

• Designator: Something that designates or specifies.
• Label: A classifying name or phrase applied to a person or thing.
• Tag: A label attached to someone or something for identification.

Related Phrases

• "ID" (Abbreviation): A common short form for "identification" or "identifier".
  • Please present your ID at the front desk.

Noun

1. a symbol that establishes the identity of the one bearing it