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sealant

[see-luh nt] /ˈsi lənt/
noun
1.
a substance used for sealing, as sealing wax or adhesives.
2.
any of various liquids, paints, chemicals, or soft substances that may be applied to a surface or circulated through a system of pipes or the like, drying to form a hard, watertight coating.
3.
Dentistry. any of several transparent synthetic resins applied to the chewing surfaces of molars and premolars in young children and teenagers as a preventive measure against tooth decay in the occlusal pits and fissures.
Origin
1940-1945
1940-45; seal1 + -ant, probably by analogy with coolant
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for sealant
  • Tunnel walls were covered with a sealant to permanently bind the coal and rock in place.
  • Floors in the corridor are light oak while floors in the common areas are cement treated with a sealant.
  • sealant not bonded to both sides of the crack shall be removed.
British Dictionary definitions for sealant

sealant

/ˈsiːlənt/
noun
1.
any substance, such as wax, used for sealing documents, bottles, etc
2.
any of a number of substances used for stopping leaks, waterproofing wood, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for sealant
n.

1945, from seal (v.) + -ant.

Online Etymology Dictionary, © 2010 Douglas Harper
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