: a sealing agent <a radiator sealant>
: a plastic material applied to parts of teeth with imperfections (as pits and fissures) to prevent dental decay
First Known Use of SEALANT
seal·ant noun \ˈsē-lənt\ (Medical Dictionary)
: 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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