短たん辺ぺんたんぺんMeanings1nounshort side; shorter sidegeometryGeometry term for the shorter sides of a rectangle, as opposed to 長辺 (long side).長ちょう方ほう形けいの短たん辺ぺんの長ながさを測はかってください。Please measure the length of the short side of the rectangle.