"geodesic" in the noun sense
1. geodesic, geodesic line
mathematics) the shortest line between two points on a mathematically defined surface (as a straight line on a plane or an arc of a great circle on a sphere)
"geodesic" in the adjective sense
1. geodetic, geodesic, geodesical
of or relating to or determined by geodesy
Source: WordNet® (An amazing lexical database of English)
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