Computing Dictionary
alphanumeric definition
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)