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1. The weakest of the four fundamental interactions of nature, hypothetically mediated by gravitons and acting on particles that have mass or energy. Also called gravitation.
2. An instance of this interaction.
(General Physics) an interaction between particles or bodies resulting from their mass. It is very weak and occurs at all distances. See interaction2
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|Noun||1.||gravitational interaction - a weak interaction between particles that results from their mass; mediated by gravitons|