Hydrofoil - Definitions from Dictionary.com

4 results for: Hydrofoil

Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

hy·dro·foil

Audio Help [hahy-druh-foil] Pronunciation Key

–noun

1.	Naval Architecture. a surface form creating a thrust against water in a direction perpendicular to the plane approximated by the surface.

Nautical.

a.	a winglike member having this form, designed to lift the hull of a moving vessel.

b.	a vessel equipped with hydrofoils.

[Origin: 1915–20; hydro-¹ + foil²

]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

Encyclopædia Britannica, Inc.
Hydrofoil

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American Heritage Dictionary - Cite This Source - Share This

hy·dro·foil Audio Help (hī'drə-foil') Pronunciation Key
n.

A winglike structure attached to the hull of a boat that raises all or part of the hull out of the water when the boat is moving forward, thus reducing drag.
A boat equipped with hydrofoils. Also called hydroplane.

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

Online Etymology Dictionary - Cite This Source - Share This
hydrofoil

1920, "boat that travels through water on wings," formed in Eng. from hydro-, comb. form of Gk. hydor "water" (see water (n.1)) + foil (n.).

WordNet - Cite This Source - Share This

hydrofoil
noun
1.	a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through; "the fins of a fish act as hydrofoils"
2.	a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds; "the museum houses a replica of the jet hydroplane that broke the record"

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