Consisting of, or limited to, letters and/or numbers, especially the characters A to Z (lowercase and uppercase) and 0 to 9.

An alphanumeric character.

In an alphanumeric / alphanumerical manner; using alphanumeric / alphanumerical characters. / In a manner that is in numeric / numerical, then alphabetic / alphabetical, order.

Consisting of only letters and numbers; alphanumeric.

plural of alphanumeric