alphanumeric

from WordNet (r) 3.0 (2006)

alphanumeric
    adj 1: of or pertaining to alphanumeric characters [syn:
           {alphanumeric}, {alphanumerical}, {alphameric},
           {alphamerical}]

from The Free On-line Dictionary of Computing (8 July 2008)

alphanumeric

   <character> 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.

   (1997-09-11)