Definition

A material used to cover or seal surfaces to stop liquids or gases from passing through, often used in construction or dentistry.

Example

The contractor applied a sealant to the roof to prevent leaks during the rainy season.

Conversation

I just got my teeth sealed at the dentist today.

Oh really? Did they use a sealant on your molars?

Yeah, they said it helps prevent cavities in those hard-to-reach spots.

That sounds smart! I should probably get that done too.

Synonyms & Antonyms

Root Explanation

Sealant → It is formed from "seal" (from Old English *seolh*, meaning to close or secure) and "-ant" (meaning a substance that performs a specified action). The word "sealant" refers to a substance that is used to close or secure gaps or joints.

Memory Tip

Think of a substance that 'closes' or 'secures' something — that's what a sealant does.

Visually Confused Words