Vit"re*ous(?), 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.
2. Of or pertaining to glass; derived from glass; as,
(Anat.), the vitreous humor. See the Note under Eye. --
(Elec.), the kind of electricity excited by rubbing glass with certain substances, as silk; positive electricity; -- opposed to resinous, or negative, electricity. --
(Anat.) See the Note under Eye. --
(Zol.), 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.
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