graticule

noun

Etymology: Borrowed from French graticule, from Medieval Latin grātīcula, from Latin crāticula (“grating, grill”), from crātis (“hurdle; wickerwork”) (probably from Proto-Indo-European *kréh₂-tis (“fenced handiwork”)) + -cula (feminine form of -culus, a variant of -ulus (“diminutive suffix”)).

1. A grid of horizontal and vertical lines; specifically, one used as a guide to proportionately enlarge or reduce a drawing.
2. A grid of horizontal and vertical lines; specifically, one used as a guide to proportionately enlarge or reduce a drawing.
3. A (nearly) rectangular or square region created by a grid of horizontal and vertical lines.