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

Sand the edges and corners, and apply a coat of natural wood stain and sealer; let dry. —Claire Hoppe Norgaard, Better Homes & Gardens, 16 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

These sealers are used by companies that maintain tennis and pickleball courts. —Tim Carter, Hartford Courant, 2 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