sealant
noun
seal·ant ˈsē-lənt 
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
Example Sentences
Recent Examples on the Web If your shelves will be used to store items that could leak, consider sealing the wood using a waterproof sealant. 
Kamron Sanders, Better Homes & Gardens, 29 Aug. 2022 Deanna Stockwell, a 24-year-old research chemist in PPG’s sealant department, donned gloves, sand socks, and a neon yellow shirt with a small blue PPG icon near the frocket before joining her tug of war team. WIRED, 22 Aug. 2022 About 84,000 square feet of concourses and large ADA ADA -3.3% ramps on the north side come with a true track surface—the same surface as the main track, just with a sealant so to withstand those pesky mustard stains from hot dog spills. Tim Newcomb, Forbes, 12 July 2022 There is a closure eastbound on Interstate 440 near Little Rock, in which the inside and middle lanes are closed for nearly 2 miles as crews place a protective sealant on the surface of the highway. Arkansas Online, 1 July 2022 Don't forget to seal the wood with deck sealant for longevity. Kelly Allen, House Beautiful, 4 Aug. 2022 There were no spills to be had during the testing process and the paint was still intact after being dropped three times thanks to the durable sealant used on this bottle. Alyssa Brascia, PEOPLE.com, 22 July 2022 In the case of roaches, the bottom of the pyramid involves making the structure roach-proof, for example by sealing openings with caulk and foam sealant. Dan Diclerico, Good Housekeeping, 22 July 2022 Kids attending a summer program at an Alaskan elementary school were served floor sealant instead of milk at a summer program. Adam Sabes, Fox News, 17 June 2022 See More
Kamron Sanders, Better Homes & Gardens, 29 Aug. 2022 Deanna Stockwell, a 24-year-old research chemist in PPG’s sealant department, donned gloves, sand socks, and a neon yellow shirt with a small blue PPG icon near the frocket before joining her tug of war team. WIRED, 22 Aug. 2022 About 84,000 square feet of concourses and large ADA ADA -3.3% ramps on the north side come with a true track surface—the same surface as the main track, just with a sealant so to withstand those pesky mustard stains from hot dog spills. Tim Newcomb, Forbes, 12 July 2022 There is a closure eastbound on Interstate 440 near Little Rock, in which the inside and middle lanes are closed for nearly 2 miles as crews place a protective sealant on the surface of the highway. Arkansas Online, 1 July 2022 Don't forget to seal the wood with deck sealant for longevity. Kelly Allen, House Beautiful, 4 Aug. 2022 There were no spills to be had during the testing process and the paint was still intact after being dropped three times thanks to the durable sealant used on this bottle. Alyssa Brascia, PEOPLE.com, 22 July 2022 In the case of roaches, the bottom of the pyramid involves making the structure roach-proof, for example by sealing openings with caulk and foam sealant. Dan Diclerico, Good Housekeeping, 22 July 2022 Kids attending a summer program at an Alaskan elementary school were served floor sealant instead of milk at a summer program. Adam Sabes, Fox News, 17 June 2022 See More Word History
First Known Use
1944, in the meaning defined at sense 1
Medical Definition
sealant
noun
seal·ant ˈsē-lənt
: 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