In a manner relating to gravity or gravitational force; by means of gravitational effects or attraction.
From 'gravitational' (adjective form of 'gravitation') with the adverbial suffix '-ly,' indicating how something happens in relation to gravity.
When scientists say something happens 'gravitationally,' they're specifying that gravity is the force responsible—a planet might be shaped 'gravitationally' because gravity pulls equally from all directions toward the center.
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