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two-body problem

[ too-bod-ee ]
/ ˈtuˈbɒd i /
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noun Astronomy, Mechanics.

the problem of calculating the motions of two bodies in space moving solely under the influence of their mutual gravitational attraction.

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“Evoke” and “invoke” both derive from the same Latin root “vocāre.”

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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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