undercoating

American  

[uhn-der-koh-ting] / ˈʌn dərˌkoʊ tɪŋ /

noun

1. a protective seal applied to the underside of an automobile to reduce corrosion and vibration.

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Etymology

Origin of undercoating

First recorded in 1920–25; undercoat + -ing ¹

Example Sentences

The owner of a 1969 Ford Mustang Mach 1 Cobra Jet he’s auctioning online credits undercoating for the surprisingly rust-free state of the Washington-based car that he’s had sitting in storage for 38 years.

From Fox News • Mar. 4, 2019

Meanwhile, an aluminum undercoating helps block the dangerous rays, while also keeping you cool.

From Slate • Jun. 4, 2018

We spent some 60 hours underneath the car scraping off undercoating, which had probably been put on by a dealership when the car was originally purchased.

From The Wall Street Journal • May 22, 2018

Sparks thrown up as the rail cars and autos skidded along the pavement had ignited the tires and undercoating of the cars.

From Washington Post • Jan. 6, 2018

The treatment had not worked as rapidly or completely as we had hoped, but I had a dark undercoating of pigment which I could touch up perfectly with stain.

From "Black Like Me" by John Howard Griffin