根数 gēnshù radical expression, surd Definitions Defs Origin Strokes Stroke Words Sentences Sents gēnshù radical expression, surd 根 gēn radical (mathematics) (mathematics) a root such as a square root or the radical sign √数 數 shù noun mathematical value a mathematical value or concept, such as an integer or an even numbergēnshù radix, base 根 gēn nounverb base the bottom or base of an object; the part of a thing where it connects to something else数 數 shù nounnumeral number number; amount; quantity; figure