A force acting in opposition to the normal force of acceleration of free fall; (also) a force acting on the human body during acceleration, especially in flight, so as to drive body fluids towards the head.
Origin
1950s.
Definition of negative g in US English:
negative g
(also negative G)
noun
A force acting in opposition to the normal force of acceleration of free fall; (also) a force acting on the human body during acceleration, especially in flight, so as to drive body fluids towards the head.