[al-fuh-noo-mer-ik, -nyoo-]
adjective Computers.
(of a set of characters) including letters, numbers, and, often, special characters, as punctuation marks: alphanumeric code.
Also, alphameric [al-fuh-mer-ik] , alphanumerical, alphamerical.

1950–55; alpha(bet) + numeric(al)

alphanumerically, alphamerically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
alphanumeric or alphameric (ˌælfənjuːˈmɛrɪk, ˌælfəˈmɛrɪk)
(of a character set, code, or file of data) consisting of alphabetical and numerical symbols
alphameric or alphameric
alphanu'merically or alphameric
alpha'merically or alphameric

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Computing Dictionary

alphanumeric definition

A decimal digit or a letter (upper or lower case). Typically, "letters" means only English letters (ASCII A-Z plus a-z) but it may also include non-English letters in the Roman alphabet, e.g., e-acute, c-cedilla, the thorn letter, and so on. Perversely, it may also include the underscore character in some contexts.
The Free On-line Dictionary of Computing, © Denis Howe 2010
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American Heritage
Abbreviations & Acronyms
alphabetical and numerical
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
The phase code is a single alphanumeric character and is not unique by agency.
It has become an alphanumeric symbol, a hieroglyph, an instant symbol.
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