sealant sealable • sealch · · · Info · Definitions · Synonyms · Characters · · sealant · · Text Latin · · Script 7 · · Length 2 · · Syllables Definitions · · · (noun) a kind of sealing material that is used to form a hard coating on a porous surface (as a coat of paint or varnish used to size a surface). Synonyms: sealer. · · Noun Definition 1 Synonyms · · · sealer · · Synonym 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 l latin small letter l U+006C n latin small letter n U+006E s latin small letter s U+0073 t latin small letter t U+0074