geodesic
adjective /ˌdʒiːəʊˈdesɪk/, /ˌdʒiːəʊˈdiːsɪk/
/ˌdʒiːəʊˈdesɪk/, /ˌdʒiːəʊˈdiːsɪk/
(specialist)- relating to the shortest possible line between two points on a curved surfaceWord Originearly 19th cent.: from geodesy (from modern Latin geodaesia, from Greek geōdaisia, from gē ‘earth’ + daiein ‘to divide’) + -ic.