aerodynamics

aer·o·dy·nam·ics Audio Help (âr'ō-dī-nām'ĭks)

n. (used with a sing. verb)
The dynamics of bodies moving relative to gases, especially the interaction of moving objects with the atmosphere.
aer'o·dy·nam'i·cist (-ĭ-sĭst) n.

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The American Heritage® Dictionary of the English Language, Fourth Edition
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