autorotation

noun au·to·ro·ta·tion \ -rō-ˈtā-shən \
Updated on: 7 Nov 2017

Definition of autorotation

: the turning of the rotor of an autogiro or a helicopter with the resulting lift caused solely by the aerodynamic forces induced by motion of the rotor along its flight path

autorotate

play \-ˈrō-ˌtāt\ intransitive verb

Recent Examples of autorotation from the Web

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

First Known Use of autorotation

1926


Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

an inference not connected logically

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?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
Bee Cubed

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!