Horizontal. In line with the horizon.The x-axis on a two- or three-dimensional grid, chart, or graph in a Cartesian coordinate system. See also Cartesian coordinates, V&H, and x-axis.
H. The H series of ITU-T Recommendations. The H series addresses audiovisual and multimedia systems. See H series.
See H in Computer
(Hexadecimal) A symbol that refers to a hex number. For example, 09h has a numeric value of 9, whereas 0Ah has a value of 10. See hex chart. See also henry.