1. the point in or near a body at which the gravitational potential energy of the body is equal to that of a single particle of the same mass located at that point and through which the resultant of the gravitational forces on the component particles of the body acts.
2. the point of greatest importance, interest, or activity: "the center of gravity for the english language is no longer britain. american english is the greatest influence on english everywhere” ( Robert W. Burchfield).

1. a point, near or within a body, through which its weight can be assumed to act when considering forces on the body and its motion under gravity. this coincides with the center of mass in a uniform gravitational field
2. any pivotal or central idea or group.

1. that point of a body about which all its parts can be balanced, or which being supported, the whole body will remain at rest, though acted upon by gravity.
2. see under center.

1. the point within something at which gravity can be considered to act; in uniform gravity it is equal to the center of mass