Definitions

1. noun

Something that identifies or describes something else, especially a name or code used to identify something in a computer system.

“The unique identifier for the database was used to track changes.”

2. verb

To recognize or establish the identity of something or someone.

“The police officer was able to identify the suspect through a thorough investigation.”

3. noun

A person or thing that helps to identify something or someone.

“The detective was an expert identifier of fingerprints.”