aer·o·dy·nam·ic 
(âr′ō-dī-nămĭk) also aer·o·dy·nam·i·cal (-ĭ-kəl)
(âr′ō-dī-nămĭk) also aer·o·dy·nam·i·cal (-ĭ-kəl)adj.
1. Of or relating to aerodynamics.
2. Designed with rounded edges so as to reduce wind drag and thereby increase fuel efficiency. Used especially of motor vehicles.
aer′o·dy·nami·cal·ly adv.