Pronunciation: /ɡreɪt ˈsɜːrkəl/
noun a circle on the surface of a sphere whose plane passes through the center of the sphere
A1 A great circle is a circle on the surface of a sphere that has the same center as the sphere.
A2 In geography, a great circle is the shortest distance between two points on the surface of a sphere.
B1 Pilots often use great circles to plan the most efficient routes for long-distance flights.
B2 The equator is an example of a great circle that divides the Earth into two equal halves.
C1 Navigators use great circles to determine the shortest route between two locations on a globe.
C2 Great circles are important in navigation and cartography for calculating accurate distances between points on the Earth's surface.
adjective excellent or outstanding in quality or degree
A1 The great circle route is the shortest path between two points on a sphere.
A2 A great circle is a circle on the surface of a sphere whose center is at the center of the sphere.
B1 Navigators use great circle routes to save time and fuel when flying long distances.
B2 Pilots often follow great circle paths when planning their flight routes.
C1 Understanding great circle navigation is essential for long-haul flight planning.
C2 The concept of great circle navigation is a fundamental principle in aviation and maritime navigation.
formal A great circle is the largest circle that can be drawn on a sphere.
informal The pilot explained that they would be following a great circle route to their destination.
slang Let's take the scenic route and follow the great circle path.
figurative In life, sometimes we have to veer off the great circle path to discover new opportunities.
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