identifier
Americannoun
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something, such as a name, number, code, label, etc., that serves to identify or represent a person or thing.
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a book, computer application, or other source that one can use to identify something, such as a bird, plant, etc., by matching it with a sound, photo, or description in an inventory.
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a person who identifies someone or something.
noun
Other Word Forms
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The way it works is guests’ faces are scanned, converted into a numerical identifier and matched with ticket data.
From Los Angeles Times • May 20, 2026
That dollar amount served as a unique identifier in a separate disclosure table showing OBDC’s valuation methods for different categories of Level 3 investments.
From The Wall Street Journal • May 13, 2026
The anonymous account had a blockchain identifier of letters and numbers.
From BBC • Jan. 5, 2026
She doesn’t use it as Nessa’s identifier but instead, uses it to poke fun at people’s misplaced assumptions of Nessa.
From Salon • Dec. 5, 2024
It is customary for the first identifier to have the species named after him, or any name he chooses, so long as it is not already in use.
From "The Evolution of Calpurnia Tate" by Jacqueline Kelly
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
