G-suit meaning

jē'so͝ot'
A flight garment worn by astronauts and jet pilots that presses on the lower body to maintain the blood supply to the brain during rapid vertical acceleration.
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A garment worn by astronauts and high-speed pilots to avoid blackouts during rapid acceleration: it exerts pressure on the abdomen and legs to prevent the pooling of blood away from the heart and brain.
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A suit designed to maintain the supply of blood to the head during violent acceleration.
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Origin of g-suit

g suit