Definitions

1. noun

A substance used to fill in gaps and cracks in surfaces to make them watertight or airtight, typically applied as a liquid.

“The contractor used a sealant to fix the leak in the bathroom sink.”

2. verb

To make or become sealed.

“The door will seal once the adhesive sets.”

3. adjective

Relating to the act or process of sealing.

“The sealant was a necessary component for the waterproofing seal.”