1. of or relating to a gnomon, or to a method of projection in which lines from a fixed point pass through every point of an object and intersect a plane
Usage: technical; mathematics and cartography
2. of or relating to gnomons or sundials
Usage: technical

Examples

• The gnomonic projection is commonly used in navigation charts.
• Cartographers employ gnomonic methods to represent the Earth's surface on flat maps.
• A gnomonic sundial uses the shadow of a gnomon to indicate the time of day.
• The gnomonic map projection preserves great circles as straight lines.
• Ancient astronomers studied gnomonic principles to understand celestial movements.