sealer

¹ American  

[see-ler] / ˈsi lər /

noun

1. an officer appointed to examine and test weights and measures, and to set a stamp upon such as are true to the standard.

2. a substance applied to a porous surface as a basecoat for paint, varnish, etc.

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sealer ² American  

[see-ler] / ˈsi lər /

noun

1. a person or ship engaged in hunting seals.

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sealer ¹ British  

/ ˈsiːlə /

noun

1. a person or thing that seals

2. (formerly in Britain and currently in the US) an official who examines the accuracy of weights and measures

3. a coating of paint, varnish, etc, applied to a surface to prevent the absorption of subsequent coats

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sealer ² British  

/ ˈsiːlə /

noun

1. a person or ship occupied in hunting seals

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Etymology

Origin of sealer¹

First recorded in 1350–1400, sealer is from the Middle English word seler. See seal ¹, -er ¹

Origin of sealer²

First recorded in 1760–70; seal ² + -er ¹

Example Sentences

Ford was able to fix the issue with a sealer, and made the change early enough in the design process to avoid a costly rework.

From The Wall Street Journal • May 5, 2026

That magic sealer penetrated into the wood and would look great for about three years.

From Seattle Times • Jul. 17, 2023

Just about every deck sealer I’ve tested has peeled.

From Seattle Times • Jul. 17, 2023

If applying a sealer or etching the tiles isn’t an option, consider grip tape, which usually comes in fairly narrow strips or rolls and works best in situations where the shower floor is smooth.

From Washington Post • Mar. 24, 2023

He was dipping a large, broomlike brush into a pail and painting the asphalt with black sealer.

From "Stargirl" by Jerry Spinelli