WordReference Random House Unabridged Dictionary of American English © 2020
acceleration of gravity, [Physics.]
  1. Physicsthe acceleration of a falling body in the earth's gravitational field, inversely proportional to the square of the distance from the body to the center of the earth, and varying somewhat with latitude: approximately 32 ft. (9.8 m) per second per second. Symbol: g Also called  gravity. 
  • 1885–90

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