改用 Traditional form: 改用 Pinyin (reading): gǎiyòng Definitions: to change over to to switch to to use (sth different) Characters: 改 - to alter, to change, to improve, to remodel 用 - to use, to employ, to apply; use Traditional characters: 改 - to alter, to change, to improve, to remodel 用 - to use, to employ, to apply; use