[1] : The Collaborative International Dictionary of English v.0.48

vitreous \vit"reous\, a. l. vitreous, from vitrum glass;
   perhaps akin to videre to see see vision. cf. varnish.
   1. consisting of, or resembling, glass; glassy; as, vitreous
      rocks.
      1913 webster

   2. of or pertaining to glass; derived from glass; as,
      vitreous electricity.
      1913 webster

   vitreous body anat., the vitreous humor. see the note
      under eye.

   vitreous electricity elec., the kind of electricity
      excited by rubbing glass with certain substances, as silk;
      positive electricity; -- opposed to resinous, or negative,
      electricity.

   vitreous humor. anat. see the note under eye.

   vitreous sponge zool., any one of numerous species of
      siliceous sponges having, often fibrous, glassy spicules
      which are normally six-rayed; a hexactinellid sponge. see
      venus's basket, under venus.
      1913 webster
see also:
vision varnish vitreous body eye vitreous electricity vitreous humor 
vitreous sponge venus's basket venus 

[2] : WordNet (r) 2.0

vitreous
     adj 1: of or relating to or constituting the vitreous humor of the
            eye; "the vitreous chamber"
     2: relating to or resembling or derived from or containing
        glass; "vitreous rocks"; "vitreous silica"
     3: 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" syn: glassy, vitrified
see also:
glassy vitrified 

Vitreous >> V Words
Vitreous, definition of term: Vitreous
vitreous_pag1.html

Vitreous Humor >> V Words
Vitreous Humor, definition of term: Vitreous Humor
vitreous+humor_pag1.html