vitreous

adjectives

of or relating to or constituting the vitreous humor of the eye
"the vitreous chamber"
pertains to
relating to or resembling or derived from or containing glass
"vitreous rocks"; "vitreous silica"
pertains to
(of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it
"glazed pottery"; "glassy porcelain"; "hard vitreous china used for plumbing fixtures"