identifier
Học thuậtThân thiện
Definition
- Noun:
- A symbol that establishes identity: An
identifieris 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
identifierissued by the government. - In this software, each customer record has a unique numeric
identifier. - The scientist used a genetic marker as an
identifierfor 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
identifierfor each citizen.
- "To serve as an identifier": To function as the distinguishing symbol.
- The barcode on the product serves as its primary
identifierin 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
- a symbol that establishes the identity of the one bearing it