negative G

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neg·a·tive G

Gravity in a foot-to-head direction in flying, or in standing on one's head; opposite of positive G.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
I tried a few positive and negative G, up-and down movements.
He then uses the temporary loss of memory from "graying out" (which occurs as positive G forces cause blood to pool in the lower extremities) to explain why Bader's memory while experiencing negative G's (which causes red out's as blood pools in the eyes) while trying to bail out, is suspect and should, thus, be discounted.
I decided not to really put on a lot of negative G and unloaded to about .3 to .5 negative G's--just enough to make anything float that wasn't stowed properly.