二十面体 èrshímiàntǐ icosahedron Origin Definitions Defs Strokes Stroke Words Sentences Sents 二十 èrshí numeral twenty the number twenty; 20面 miàn noun plane (math) a surface or plane体 體 tǐ noun form (bound form) the form, state, or shape of a substance, such as a solid or liquid; the configuration or structure of an object