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alphanumeric

American

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

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.

See Examples For:

alphanumeric

Over time, those markings were replaced with a unique alphanumeric code system, while deliveries came to rely on bicycles, motorbikes and Mumbai's suburban train network.

From BBC ● May 29, 2026

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

In ruling for Overington, Judge Gregory Williams rejected the DMV’s arguments that the alphanumeric combination of letters and numbers on vanity plates constitutes “government speech” and can be regulated as officials see fit.

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