自乘 Traditional form: 自乘 Pinyin (reading): zìchéng Definitions: (math.) to multiply (a number) by itself; to raise (a number) to a power; (esp.) to square (a number) Characters: 自 - self; private, personal; from 乘 - ride, mount; to make use of; to ascend; to multiply Traditional characters: 自 - self; private, personal; from 乘 - ride, mount; to make use of; to ascend; to multiply