Defn: A kind of glass which is very hard and difficult to fuse, used as an insulator in electrical lamps and other apparatus.

VITRO-DI-TRINA
Vit"ro-di-tri"na, n. [It. vetro di trina glass of lace.]

Defn: A kind of Venetian glass or glassware in which white threads are embedded in transparent glass with a lacelike or netlike effect.

VITRUVIAN
Vi*tru"vi*an, a.

Defn: Of or pertaining to Vitruvius, an ancient Roman architect. Vitruvian scroll (Arch.), a name given to a peculiar pattern of scrollwork, consisting of convolved undulations. It is used in classical architecture. Oxf. Gloss.

VITTA
Vit"ta, n.; pl. Vittæ. Etym: [L. vitta ribbon, fillet.]

1. (Bot.)

Defn: One of the oil tubes in the fruit of umbelliferous plants.

2. (Zoöl.)

Defn: A band, or stripe, of color.