Adjectives

(a)vitreousof or relating to or constituting the vitreous humor of the eye“the vitreous chamber”
(a)vitreousrelating to or resembling or derived from or containing glass“vitreous rocks”, “vitreous silica”
(s)glassy, vitreous, vitrified(of ceramics) having the surface made shiny and nonporous by fusing a vitreous solution to it“glassy porcelain”, “hard vitreous china used for plumbing fixtures”