Definition of dot pitch in English:

dot pitch

noun

  • (In photolithography, printing, electronic display, etc.) a measure of the density of dots used in forming an image, and hence the sharpness of that image; especially (in later use) the smallest distance in an electronic display between two subpixels of the same colour.

    In printing dot pitch is typically expressed as the number of dots per square inch.

Origin

1960s; earliest use found in U.S. Patents.