au·​to·​gi·​ro | \ ˌȯ-tō-ˈjī-(ˌ)rō How to pronounce autogiro (audio) \
variants: or autogyro
plural autogiros

Definition of autogiro

: a rotary-wing aircraft that employs a propeller for forward motion and a freely rotating rotor for lift

Illustration of autogiro

Illustration of autogiro

Examples of autogiro in a Sentence

Recent Examples on the Web

Gyrocopters: 1939 to 1940s The autogiro, a single-person helicopter-ish vehicle, was invented in the early 1920s by a Spanish engineer named Juan de law Cierva. Popular Mechanics Editors, Popular Mechanics, "12 Geeky Ways to Deliver Mail: U.S. Postal Service Technology Through the Ages," 18 Jan. 2019 The Autogyro Spanish engineer Juan de la Cierva invented and first flew his autogiro in Madrid in January 1923. Alex Davies, WIRED, "The Machines We Took From Our Former Colonial Overlords and Made Better," 3 July 2014

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

First Known Use of autogiro

1907, in the meaning defined above

History and Etymology for autogiro

from Autogiro, a trademark

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The first known use of autogiro was in 1907

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