柯林斯詞典abscissa /?b?s?s?/ 1. N the horizontal or x-coordinate of a point in a two-dimensional system of Cartesian coordinates. It is the distance from the y-axis measured parallel to the x-axis 橫坐標(biāo)→compare ordinate 返回 abscissa劍橋詞典a number on an X-axis that shows the coordinate of a point （數(shù)學(xué)）橫坐標(biāo) 返回 abscissa