monocoat noun 1verb 1forms 3 noun1 •A topcoat used to finish a surface and not followed by the application of a clearcoat.Identification of some organic pigments used in red and brown nonmetallic and metallic monocoats – quinacridones. — 2001 verb1 •To apply this kind of coating to. formsmonocoated · monocoating · monocoats