centre of pressure

noun

physics the point in a body at which the resultant pressure acts when the body is immersed in a fluid
aeronautics the point at which the resultant aerodynamic forces intersect the chord line of the aerofoil

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012