- sealant, sealer - 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)
--1 is a kind of sealing material
Derived forms: verb seal5, verb seal2 - sealer - an official who affixes a seal to a document
--2 is a kind of official, functionary
Derived forms: verb seal4, verb seal1