Identifier
nounverified·updated May 9, 2026
Unique data used to represent a person's identity and associated attributes. A name or a card number are examples of identifiers. A unique label used by a system to indicate a specific entity, object, or group.
NIST SP 800-171r3
Senses
NISTIR 7298: Glossary of Key Information Security Terms, Revision 2
Unique data used to represent a person’s identity and associated attributes. A name or a card number are examples of identifiers.
NISTIR 7298: Glossary of Key Information Security Terms, Revision 2sense 2 pending review
A data object - often, a printable, non-blank character string - that definitively represents a specific identity of a system entity, distinguishing that identity from all others.
Wordset Dictionary
a symbol that establishes the identity of the one bearing it
Classifications
Entity Type
Data85%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Sensitivity
—60%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Information Class
—80%llm-generatedllm:claude-haiku-4-5
?unassignedlast reviewed —
Variants
- plural
- Identifiers
- possessive
- Identifier's
- pluralpossessive
- Identifiers'