字号 Traditional form: 字號 Pinyin (reading): zìhào Definitions: characters and numbers (as used in a code) alphanumeric code serial number Characters: 字 - character, letter, symbol, word 号 - mark, sign; symbol; number; to call, to cry, to roar Traditional characters: 字 - character, letter, symbol, word 號 - mark, sign; symbol; number; to call, to cry, to roar