Grăv'i-tāte, v. i.
v. i. [imp. & p. p. GRAVITATED; p. pr. & vb. n. GRAVITATING.] [It. gravitare, Sp. gravitar, Fr. graviter. See GRAVITY.] To obey the law of gravitation; to exert a force or pressure, or tend to move, under the influence of gravitation.
Why does this apple fall to the ground? Because all bodies gravitate toward each other. W. Hamilton.