Definition of hydrofoil in English:


Line breaks: hydro|foil
Pronunciation: /ˈhʌɪdrə(ʊ)fɔɪl


  • 1A boat whose hull is fitted underneath with shaped vanes (foils) which lift the hull clear of the water at speed.
    More example sentences
    • Much of its activity is centred around the riva - the promenade - filled with a jostle of yachts, powerboats and hydrofoils that can ferry you to tiny ports along a coastline dotted with unspoilt beaches and 1,185 islands.
    • High speed catamarans or hydrofoils will whisk up to 150 passengers on the 30-minute journey from Fife to Edinburgh's waterfront every half an hour at peak times.
    • Nevertheless, it explains the huge number of ferries and hydrofoils that regularly ply the waters.
  • 1.1Each of the foils of a hydrofoil.
    More example sentences
    • The engine uses winglike hydrofoils mounted on a pair of belts to convert the energy of water at low dams into a rotational output at twoaxles.
    • He also believes the design has potential applications for Defence, including wings for lightweight unmanned aircraft and high-speed hydrofoils for naval boats.
    • In contrast, Robinson observed that plesiosaur flippers were shaped like hydrofoils and hypothesized that they produced thrust through lift rather than drag.


1920s: from hydro- 'relating to water', on the pattern of aerofoil.

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