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undercoating

[uhn-der-koh-ting]
noun
  1. a protective seal applied to the underside of an automobile to reduce corrosion and vibration.
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Origin of undercoating

First recorded in 1920–25; undercoat + -ing1

undercoat

[uhn-der-koht]
noun
  1. a coat or jacket worn under another.
  2. Zoology. a growth of short fur or hair lying beneath a longer growth.
  3. an undercoating.
  4. a coat of paint or the like applied under the finishing coat.
  5. a paint, sealer, or the like specially prepared for use underneath a finishing coat.
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verb (used with object)
  1. to apply an undercoating to.
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Origin of undercoat

First recorded in 1640–50; under- + coat
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for undercoating

undercoat

noun
  1. a coat of paint or other substance applied before the top coat
  2. a coat worn under an overcoat
  3. zoology another name for underfur
  4. the US name for underseal
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verb
  1. (tr) to apply an undercoat to (a surface)
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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