aerodynamics
noun
aero·dy·nam·ics
ˌer-ō-dī-ˈna-miks
plural in form but singular or plural in construction
1
: a branch of dynamics that deals with the motion of air and other gaseous fluids and with the forces acting on bodies in motion relative to such fluids
2
: the qualities of an object that affect how easily it is able to move through the air
The aerodynamics … turned out to be better than his engineers promised. The 777 was so slippery that its cruise speed was upped from .83 Mach to .84 …—Clive Irving
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Merriam-Webster unabridged
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