What is Non-gravity?

Non-gravity definition and meaning on Dictionary terms:
noun, plural gravA.iA.ties.
the force of attraction by which terrestrial bodies tend to fall toward the center of the earth.
heaviness or weight.
gravitation in general.
acceleration of gravity.
a unit of acceleration equal to the acceleration of gravity. Symbol: g
serious or critical nature: He seemed to ignore the gravity of his illness.

serious or dignified behavior; dignity; solemnity: to preserve one’s gravity in the midst of chaos.
lowness in pitch, as of sounds.