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American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
a drive system in which engine power is transmitted to all four wheels of a vehicle for improved traction.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||4WD - a motor vehicle with a four-wheel drive transmission system|
|2.||4WD - a transmission that provides power directly to all four wheels of a motor vehicle|
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