Simple Definition of hydrofoil

from our Learner's Dictionary

hydrofoil

noun

ˈhaɪdrəˌfojəl How to pronounce hydrofoil (audio)
plural hydrofoils
: a very fast boat that rises partly out of the water when moving at high speeds

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“Hydrofoil.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/hydrofoil. Accessed 18 Apr. 2026.

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