A sealant is a substance used to fill or close gaps, cracks, or holes. It helps to prevent air, water, or other substances from passing through, maintaining a tight and secure seal. Full definition
The counters are indeed wood, they are Brazilian Cherry, a very hard wood, and they have several layers of sealant on them. (theinspiredroom.net)
An easy solution to this is to re-grout, caulk and use sealant on bathroom tile and surrounding fixtures. (rismedia.com)
Benchmarks include decreasing emergency room usage, increasing use of dental sealants for children, using electronic health records, screening for colorectal cancer and providing timely prenatal care. (sciencedaily.com)