n. any one of five points in the plane of a system of two large astronomical bodies orbiting each other, as the Earth-moon system, where the gravitational pull of the two bodies on an object are approximately equal, and in opposite directions. A solid object moving in the same velocity and direction as such a libration point will remain in gravitational equilibrium with the two bodies of the system and not fall toward either body. [ 1913 Webster ]
The Collaborative International Dictionary of English (GCIDE) v.0.53
n. any one of five points in the plane of a system of two large astronomical bodies orbiting each other, as the Earth-moon system, where the gravitational pull of the two bodies on an object are approximately equal, and in opposite directions. A solid object moving in the same velocity and direction as such a libration point will remain in gravitational equilibrium with the two bodies of the system and not fall toward either body. [ 1913 Webster ]
[yín diǎn, ㄧㄣˊ ㄉㄧㄢˇ, 银点 / 銀點] the silver point; the melting point of silver 962°C used as a calibration point in some temperature scales [Add to Longdo]
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