Webster's English Dictionary

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gravity

grav.i.ty \'grav-*t-e-\ n [MF or L; MF gravite`, fr. L. gravitat-, 
   gravitas, fr. gr]avis 1a: dignity or sobriety of bearing  1b: IMPORTANCE, 
   SIGNIFICANCE; esp : SERIOUSNESS  2: PONDERABILITY  3: WEIGHT - used chiefly 
   in the phrase center of gravity  4a: the gravitational attraction of the 
   earth's mass for bodies at or near  its surface; broadly : GRAVITATION 4b: 
   ACCELERATION OF GRAVITY  4c: SPECIFIC GRAVITY  - gravity aj