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AUTOPILOT

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au⋅to⋅pi⋅lot

[aw-toh-pahy-luht]

Origin:
auto- 3 + pilot

automatic pilot

–noun
1. Aeronautics. an airborne electronic control system that automatically maintains a preset heading and attitude. Also called automatic, autopilot, gyropilot, robot.
2. on automatic pilot, functioning in an unthinking or reflexive manner.

Origin:
1915–20
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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au·to·pi·lot   (ô'tō-pī'lət)   
n.  Automatic pilot.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

autopilot 
1935, from auto- + pilot (q.v.).
Online Etymology Dictionary, © 2001 Douglas Harper
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Encyclopedia

autopilot

device for controlling an aircraft or other vehicle without constant human intervention.

Learn more about autopilot with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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