单词 | sealant |
释义 | sealant /see"leuhnt/, n. 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. [1940-45; SEAL1 + -ANT, prob. by analogy with COOLANT] |
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