sealant (plural sealants)
- Any material used to seal a surface so as to prevent passage of a fluid.
- (Construction) A mixture of polymers, fillers, and pigments used to fill and seal joints where moderate movement is expected.
- dental sealant
- fissure sealant
- pit and fissure sealant
- sealant backing
material used to seal a surface so as to prevent passage of a fluid