Adjective vitreous has 3 senses
  1. vitreous - of or relating to or constituting the vitreous humor of the eye; "the vitreous chamber"
  2. vitreous - relating to or resembling or derived from or containing glass; "vitreous rocks"; "vitreous silica"
  3. glassy, vitreous, vitrified - (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"
    Antonym: unglazed (indirect, via glazed)
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