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Definition of airfoil

airfoil

/ˈɛər.fɔɪl/
(UK: aerofoil)
air · foil
Plural:airfoils
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airfoil Lexical Profile

airfoil Game Scores & Validity

• noun

1

North American A streamlined structure with curved surfaces, such as an aircraft wing, propeller blade, or tail fin, designed to generate lift or control aerodynamic forces while moving through a fluid or gas.

Example

"The aerospace engineers tested the new airfoil in a wind tunnel to measure its lift-to-drag ratio at high speeds."

Synonyms
View all synonyms for airfoil

Word Nuance & Usage

"Airfoil" is the standard North American spelling, whereas "aerofoil" is used in British and Commonwealth English.

• Nearby Words

airfare
airfield
airflow
airfoil
airfreight
airgun
airhead

Word Origin & Etymology

Coined in the early 20th century in American English as a respelling of the British "aerofoil", combining "air" with "foil" (from Latin "folium", meaning "leaf"), in reference to a thin, curved surface moving through the air.

Cite this Entry

Wordmom. (2026). Definition of Airfoil. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/airfoil
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