noun
abscissa; x-coordinate
Mathematical term for the horizontal coordinate in a Cartesian coordinate system. Often contrasted with 縦座標 (ordinate).
See also: 縦座標
点の横座標は3で、縦座標は5です。
The abscissa of the point is 3, and the ordinate is 5.
座標 is the general term for 'coordinate'; 横座標 specifies the horizontal coordinate.
Compound of 横 (horizontal) and 座標 (coordinate).