1 a the force that attracts a body to the centre of the earth or other celestial body. b the degree of intensity of this measured by acceleration. c gravitational force.
2 the property of having weight.
3 a importance, seriousness; the quality of being grave. b solemnity, sobriety; serious demeanour.
Phrases and idioms:
gravity feed the supply of material by its fall under gravity.
Etymology: F graviteacute or L gravitas f. gravis heavy
Useful english dictionary. 2012.