From Longman Dictionary of Contemporary Englishalphanumerical‧pha‧nu‧mer‧ic /ˌælfənjuːˈmerɪk◂ $ -nuː-/ (also alphanumerical /-ˈmerɪkəl/) adjective SLusing letters and numbers alphanumeric codes
Examples from the Corpus
alphanumeric• The password may be up to 12 alphanumeric characters long, including spaces.• You may use up to 48 alphanumeric characters.• an alphanumeric code• First, the data differ radically; we are no longer dealing with only table-formatted, alphanumeric data.• Press A for an alphanumeric Sort. 7.• This can be any alphanumeric string up to 28 characters in length.From Longman Business Dictionaryalphanumerical‧pha‧nu‧me‧ric /ˌælfənjuːˈmerɪk-nuː-/ (also alphanumerical /-ˈmerɪkəl/) adjective using letters and numbersan alphanumeric passwordOrigin alphanumeric (1900-2000) alphabet + numerical 