未知数 wèizhīshù HSK7 unknown number Origin Definitions Defs Strokes Stroke Words Sentences Sents wèizhīshù unknown number 未知 wèizhī adjectivenoun unknown not yet known; not yet understood数 數 shù noun mathematical value a mathematical value or concept, such as an integer or an even numberwèizhīshù an unknown 未知 wèizhī adjectivenoun unknown not yet known; not yet understood数 數 shù nounnumeral number number; amount; quantity; figure