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alphanumeric

American

[al-fuh-noo-mer-ik, -nyoo-] / ˌæl fə nuˈmɛr ɪk, -nyu- /

Also alphameric

adjective

Computers.

(of a set of characters) including letters, numbers, and, often, special characters, as punctuation marks.

alphanumeric code.

alphanumeric British

/ ˌælfənjuːˈmɛrɪk, ˌælfəˈmɛrɪk /

adjective

(of a character set, code, or file of data) consisting of alphabetical and numerical symbols

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of alphanumeric

First recorded in 1950–55; alpha(bet) + numeric(al)

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.

It’s an alphanumeric code that the airline gives you after purchasing your ticket.

From MarketWatch • Dec. 3, 2025

The alphanumeric code went out on the chats, on the Instagram.

From Slate • Oct. 27, 2025

This, said the expert, would have been armed by a signal, something called an alphanumeric text message.

From BBC • Sep. 17, 2024

Williams noted that the Texas case involved the background art and designs on specialty plates, not the alphanumeric text.

From Seattle Times • May 15, 2024

I quickly entered the ID number and the long alphanumeric password that I’d memorized.

From "Ready Player One: A Novel" by Ernest Cline

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023