Definition of sealant
1 : a sealing agent <a radiator sealant>
2 : a plastic material applied to parts of teeth with imperfections (as pits and fissures) to prevent dental decay
First Known Use of sealant
SEALANT Defined for English Language Learners
Definition of sealant for English Language Learners
: a substance that is put on a surface in order to protect it from air, water, etc.
Medical Definition of sealant
: a plastic material that is applied to parts of teeth (as the occlusal surfaces of molars and premolars) with imperfections (as pits and fissures) usually to prevent dental decay
Seen and Heard
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