grav·ityBrE/ˈɡrævəti/NAmE/ˈɡrævəti/noun[U] (abbreviationg) theforcethatattractsobjectsinspacetowardseachother, andthatontheearthpullsthemtowardsthecentreoftheplanet, sothatthingsfalltothegroundwhentheyaredropped重力;地球引力◆Newton'slawofgravity牛顿万有引力定律➡ see alsocentre of gravity