The Collaborative International Dictionary
G suit \G suit\ G-suit \G-suit\ n. [gravity + suit. 1944[MW10]] (Aeronautics) A suit worn by aviators and astronauts, designed to counteract the effects of high accelerations experienced in aerial maneuvers, in particular to avoid unconsciousness; called also anti-g suit. It exerts force on the abdomen and legs to prevent blackouts by counteracting the tendency of blood to accumulate below the heart, thus reducing the supply to the brain, when the forces due to acceleration are directed from head to toe.
WordNet
n. worn by fliers and astronauts to counteract the forces of gravity and acceleration [syn: G suit]
Usage examples of "anti-g suit".
The sudden change of temperature as the heated air of the cabin rushed out and was replaced by the Arctic air above the floe seemed to knife through the protection of the anti-G suit as if it had been made of thin summerweight cotton.
The pilot was walking across from the crew's quarters, clumsy in his boots and anti-g suit, his oxygen helmet dangling.