Meaning of hydroplane

hy•dro•plane

Pronunciation: (hī'dru-plān"), [key]
— n., v., -planed, -plan•ing.
—n.
  1. a seaplane.
  2. an attachment to an airplane enabling it to glide on the water.
  3. a light, high-powered boat, esp. one with hydrofoils or a stepped bottom, designed to plane along the surface of the water at very high speeds.
  4. a horizontal rudder for submerging or elevating a submarine.
—v.i.
  1. to skim over water in the manner of a hydroplane.
  2. to travel in a hydroplane.
  3. (of a vehicular tire or vehicle) to ride on a film of water on a wet surface with a resulting decrease in braking and steering effectiveness.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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