g-loc
n.— «If unchecked, high G’s can eventually lead to what is called G-loc, or G-induced loss of consciousness. Typically, a pilot is knocked out for 12 to 24 seconds followed by several minutes of disorientation.» —“G-force: Experiencing the effects” by Brian J. Couturier Richmond Times-Dispath (Virginia) May 4, 2006. (source: Double-Tongued Dictionary)