graticule

/G R AE1 T AH0 K Y UW0 L/
noun
  1. 1

    A grid of horizontal and vertical lines.

  2. 2

    (specifically) A reticle.

  3. 3

    (specifically) The network of lines of latitude and longitude that make up a coordinate system such as the one used for the Earth.

  4. 4

    A nearly square or nearly rectangular region created by a graticule.

Source: https://en.wiktionary.org/wiki/graticule