In the context of an air flow relative to a flying body, the lift force is the component of the aerodynamic force that is perpendicular to the flow direction."Definition of lift." NASA. Retrieved: May 6, 2012. Aerodynamic lift results when the wing causes the surrounding air to be deflected - the air then causes a force on the wing in the opposite direction, in accordance with Newton's third law of motion.
iN thE coNtexT of aN air fLOw ReLative TO a FlyInG bodY, thE lift fOrcE iS ThE COmponent oF the aerodynaMic force tHat Is pErPeNdIculaR To the flow DiREctIOn."DeFINItion OF liFt." nasa. rEtrievED: mAy 6, 2012. aErodynamiC lift results wHen THe wInG causEs ThE suRrOundInG Air to be defleCteD - The Air then cAuses a forcE On the winG In the oppOsitE DirectIon, in accorDance with newtoN'S tHird laW OF MOtion.