horizontal resolution

[‚här·ə′zänt·əl ‚rez·ə′lü·shən] (electronics) The number of individual picture elements or dots that can be distinguished in a horizontal scanning line of a television or facsimile image. Also known as horizontal definition.

horizontal resolution

The number of elements, dots or columns from left to right on a printed page, display screen or fixed area such as one inch. Contrast with "vertical resolution," which is the number of rows, dots or lines from top to bottom.