hydrodynamic
- a of or relating to hydrodynamics
- Professor Leet calls them "hydrodynamic waves.
- Shapes of keels now vary widely, from the basic lead-filled bulb at the end of a fin to the hydrodynamic "winged" keel, a Y-shaped structure that has less underwater drag and more .
- The broad hollow ends are directed backward and provide sufficient hydrodynamic resistance to keep the skis from sliding backward between steps.