hydrofoil

noun
hy·​dro·​foil | \ˈhī-drə-ˌfȯi(-ə)l \

Definition of hydrofoil 

1 : a body similar to an airfoil but designed for action in or on water

2 : a motorboat that has metal plates or fins attached by struts fore and aft for lifting the hull clear of the water as speed is attained

Illustration of hydrofoil

Illustration of hydrofoil

hydrofoil 2

Examples of hydrofoil in a Sentence

Recent Examples on the Web

High-speed hydrofoils with names like FlyingCat and FlyingDolphin, from Hellenic Seaways or Aegan Flying Dolphins, will ferry you to the destination. Condé Nast Traveler, "Car-Free Destinations for Your Next Island Vacation," 1 June 2018 As if that's not reason enough, the ingredients list is filled with aloe extract, rose hydrofoil, and green tea extract which all make for a super hydrating and nourishing eye cream. Tanisha Pina, Allure, "13 Beauty Essentials You Should Stock Up On During Amazon Prime Day," 16 July 2018 All six of the Pegasus-class hydrofoils were retired in the early 1990s. Kyle Mizokami, Popular Mechanics, "The Strange, Sad Odyssey of the USS Gemini," 25 July 2016 Younger yachters have already embraced small, high-performance hydrofoil dinghies, such as the International Moth. Luke O'brien, Town & Country, "Hot Pursuit," 1 Sep. 2013 The Navy had studied hydrofoil ship concepts for two decades. Kyle Mizokami, Popular Mechanics, "When the U.S. Navy Had Tiny Hot Rods That Flew Over the Sea," 23 Dec. 2015 Still considered a prototype, the Surf Ranch wave is generated by a massive hydrofoil pulled along a track, displacing the water over an artificial reef. Hemal Jhaveri, For The Win, "How Kelly Slater took surfing out of the ocean and onto dry land," 3 July 2018 Those yachts, which could be equipped to hydrofoil in some conditions, would require smaller crews, probably no more than five sailors compared with the maximum of 10 that were used on the Volvo Ocean 65s this time. Christopher Clarey, New York Times, "Open Waters?," 21 June 2018 Mostly free of the drag imposed by sitting in liquid, a hydrofoil ship could go much faster than an ordinary vessel. Kyle Mizokami, Popular Mechanics, "When the U.S. Navy Had Tiny Hot Rods That Flew Over the Sea," 23 Dec. 2015

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hydrofoil.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of hydrofoil

1919, in the meaning defined at sense 1

Keep scrolling for more

Learn More about hydrofoil

Statistics for hydrofoil

Last Updated

16 Dec 2018

Look-up Popularity

Time Traveler for hydrofoil

The first known use of hydrofoil was in 1919

See more words from the same year

Keep scrolling for more

More Definitions for hydrofoil

hydrofoil

noun

English Language Learners Definition of hydrofoil

: a very fast boat that rises partly out of the water when moving at high speeds

Keep scrolling for more

More from Merriam-Webster on hydrofoil

Rhyming Dictionary: Words that rhyme with hydrofoil

Spanish Central: Translation of hydrofoil

Britannica.com: Encyclopedia article about hydrofoil

Comments on hydrofoil

What made you want to look up hydrofoil? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

having a pattern of small flowers

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!