hachure

noun

1. one of a series of short parallel lines drawn on a map to indicate topographic relief.
2. shading composed of such lines.

verb (used with object), ha·chured, ha·chur·ing.

3. Also hatch. to indicate or shade by hachures.

noun

1. hatchingSee hatch 3
2. shading of short lines drawn on a relief map to indicate gradients

verb

3. (tr) to mark or show by hachures