1.Definition: (of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it
"Hard vitreous china used for plumbing fixtures"
2.Definition: of or relating to or constituting the vitreous humor of the eye
"The vitreous chamber"
3.Definition: relating to or resembling or derived from or containing glass
"Vitreous rocks", "Vitreous silica"