Definition of "alphanumeric"

alphanumeric

/ˌæl.fə.n(j)uːˈmɛ.ɹɪk/

adjective
not comparable
1. Consisting of, or limited to, letters and/or numbers, especially the characters A to Z (lowercase and uppercase) and 0 to 9.
2. Consisting of these characters plus punctuation and other special characters.
  Quotations
  Therefore, we need a special code to represent all alphanumeric data (letters, symbols, and numbers).
  2005, Bali, 2000 Solved Problems in Digital Electronics, Tata McGraw-Hill Education , page 36
noun
plural alphanumerics
1. An alphanumeric character.
  Quotations
  Finally, alphanumerics are digits, uppercase letters, lowercase letters, or accented letters […]
  2014, Pierre M. Nugues, Language Processing with Perl and Prolog: Theories, Implementation, and Application, Springer, page 268