geo·de·sic /ˌʤiəˈdɛsɪk, ˈdi, zɪk/
  (a.)測地學的,測量的,測地線的測地線
  Ge·o·des·ic Ge·o·des·ic·al a.
  1. Math. Of or pertaining to geodesy; geodetic.
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  Ge·o·des·ic, n. A geodetic line or curve.
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  geodesic
       adj 1: of or resembling a geodesic dome
       2: of or relating to or determined by geodesy [syn: geodetic,
           geodesical]
       n : (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) [syn: geodesic
           line]