. . . . . "(physics) the theory that any two particles of matter attract one another with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them"@en-us . "0"^^ . . "theory of gravitation"^^ . "Newton's theory of gravitation"@en-us . . . "gravitational theory"@en-us . . "105990089"^^ . . "theory of gravity"@en-us . "05990089-n"^^ . "0"^^ . . "theory of gravitation"@en-us . "105638189"@en-us . .