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, vitreous electricity.
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(Zoöl.), 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.