Simple Definition of sealant
: a substance that is put on a surface in order to protect it from air, water, etc.
Full 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
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
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Medical Dictionary: Definition of "sealant"
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