sealer

1 of 2

noun (1)

seal·​er ˈsē-lər 

1

: an official who attests or certifies conformity to a standard of correctness

2

a

: a coat (as of size) applied to prevent subsequent coats of paint or varnish from sinking in

b

: a compound applied to grout especially to repel moisture and prevent staining

Cleaned or newly colored grout will stay that way longer, and be easier to clean, if the grout is coated with a sealer.

—Gene Austin

sealer

2 of 2

noun (2)

: a person or a ship engaged in hunting seals

Examples of sealer in a Sentence

Recent Examples on the Web

Noun

This stopper keeps non-sparkling wine fresh for up to 10 days after opening by removing air from the bottle using vacuum-sealer technology. —L. Daniela Alvarez, Better Homes & Gardens, 29 Sep. 2025

Specializing in thermal adhesive and battery compression pad production for electric vehicle manufacturers across the Southeast, Unitech also manufacturers industrial adhesives and sealers for its customers. —Stuart Dyos, Nashville Tennessean, 25 Sep. 2025

Penetrating sealers can also protect a concrete surface from oil stains by creating a barrier that prevents stains and makes clean-up easier. —Mary Catherine McAnnally Scott, Southern Living, 30 Aug. 2025

Like an official letterhead that graces the top of old-school paper correspondence, or a signature at the end of a legal contract, a sealing carried the authority of the sealer, affirmed their identity, or verified a transaction. —Literary Hub, 26 Aug. 2025

Word History

First Known Use

Noun (1)

15th century, in the meaning defined at sense 1

Noun (2)

1770, in the meaning defined above

Rhymes for sealer

• dealer
• feeler
• healer
• keeler
• peeler
• stealer
• repealer
• revealer

Kids Definition

sealer

1 of 2 noun

seal·​er ˈsē-lər 

1

: an official who certifies weights and measures

2

: a substance used on a surface to be painted that prevents the paint from sinking in

sealer

2 of 2 noun

: a person or a ship engaged in hunting seals