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WordReference Random House Learner's Dictionary of American English © 2024hy•dro•plane /ˈhaɪdrəˌpleɪn/USA pronunciation n., v., -planed, -plan•ing. n. [countable] - Aeronauticsa seaplane.
- Nautical, Naval Termsa light, high-powered boat designed to skim along the surface of the water at high speeds.
v. [no object] - Naval Termsto skim over water in the manner of a hydroplane.
- Naval Termsto travel in or pilot a hydroplane.
See -hydr-. WordReference Random House Unabridged Dictionary of American English © 2024hy•dro•plane (hī′drə plān′),USA pronunciation n., v., -planed, -plan•ing. n. - Aeronauticsa seaplane.
- Aeronauticsan attachment to an airplane enabling it to glide on the water.
- Nautical, Naval Termsa 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.
- Nautical, Naval Termsa horizontal rudder for submerging or elevating a submarine.
v.i. - Aeronautics, Naval Termsto skim over water in the manner of a hydroplane.
- Aeronautics, Naval Termsto travel in a hydroplane.
- AutomotiveAlso, aquaplane. (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.
Collins Concise English Dictionary © HarperCollins Publishers:: hydroplane /ˈhaɪdrəʊˌpleɪn/ n - a motorboat equipped with hydrofoils or with a shaped bottom that raises its hull out of the water at high speeds
- an attachment to an aircraft to enable it to glide along the surface of water
- another name (esp US) for a seaplane
- a horizontal vane on the hull of a submarine for controlling its vertical motion
vb - (intransitive) (of a boat) to rise out of the water in the manner of a hydroplane
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