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identifier

UK[aɪˈdentɪfaɪə(r)]US[aɪˈdentɪfaɪər]
n

a sequence of characters used to identify or refer to a unique object, element, or entity, especially in computing or formal systems.

n

a person or thing that establishes or confirms the identity of someone or something.

Morpheme Breakdown

ident
ify
er
ident

same

ify

to make

er

agent suffix

Etymology

The word 'identifier' is built upon the core Latin concept of 'idem', meaning "the same", which is the foundation for 'identity'. The suffix '-ify', from Latin '-ficare', transforms this root into the verb 'identify', meaning "to make or treat as the same". Finally, the agent suffix '-er' is appended, creating a noun for an entity that performs the act of identifying. Thus, an 'identifier' logically progresses from the ancient idea of sameness, through the action of establishing that sameness, to the modern agent—whether a person, a card, or a string of code—that serves this definitive purpose.

Analysis

Structure: ident (same) + ify (to make) + er (agent suffix) - ident: From Latin idem meaning "the same". Functions as the core root conveying the concept of sameness or identity. - ify: A verb-forming suffix from Latin -ficare, meaning "to make" or "to cause to become". - er: An agent noun suffix from Old English -ere, indicating a person or thing that performs the action of the verb.

Examples

The passport is the primary identifier for international travel.

Each variable in the program must have a unique identifier.

The police used dental records as a key identifier for the victim.

identifier – Meaning, Etymology & Word Origin | OpenEtymology