Definitions
1.nounThe shortest line between two points on a specific surface.
2.noun(spherical geometry) A segment of a great circle.
3.nounA course allowing the parallel-transport of vectors along a course that causes tangent vectors to remain tangent vectors throughout that course (a straight curve, a line that is straight).
4.adjectiveOf or relating to geodesy.
5.adjectiveOf or relating to a geodesic dome.