sealant

noun seal·ant \ ˈsē-lənt \
|Updated on: 21 Jul 2018

Definition of sealant

1 : a sealing agent
  • a radiator sealant
2 : a plastic material applied to parts of teeth with imperfections (such as pits and fissures) to prevent dental decay

Recent Examples of sealant from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sealant.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of sealant

1944

in the meaning defined at sense 1

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SEALANT Defined for English Language Learners

sealant

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 Dictionary

sealant

noun seal·ant \ ˈsē-lənt \

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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