Also found in: Wikipedia.


n.1.A kind of glass which is very hard and difficult to fuse, used as an insulator in electrical lamps and other apparatus.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
Burnham, "Evolution of a simple modal of vitrite reflectance on chemical kinetics," AAPG Bull, vol.