超平面 chāopíngmiàn hyperplane Origin Definitions Defs Strokes Stroke Words Sentences Sents 超 chāo adverb super- (bound form) Prefix meaning super-, ultra-, or extra-; occurring at a level significantly higher (or lower) than the normal standard.平面 píngmiàn noun plane (geometry) a flat surface; in mathematics, a surface containing all the straight lines that connect any two points on it