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headwind

[hed-wind]
noun
  1. a wind opposed to the course of a moving object, especially an aircraft or other vehicle (opposed to tailwind).
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Origin of headwind

First recorded in 1780–90; (a)head + wind1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for headwind

headwind

noun
  1. a wind blowing directly against the course of an aircraft or shipCompare tailwind
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

headwind in Science

headwind

  1. A wind blowing directly against the course of a moving object, especially an aircraft or ship.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.