Overall cost to widen driveway. A proper driveway extension will have to be installed just like the original driveway, so even if you're just adding a few feet to each side, you may incur some considerable costs with excavating the area, setting up the driveway base and then installing the extension.
Definitions for vitrified. glassy, vitreous, vitrified(adj) (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. vitrified(Adjective)
Devitrification(noun) the act or process of devitrifying, or the state of being devitrified. Specifically, the conversion of molten glassy matter into a stony mass by slow cooling, the result being the formation of crystallites, microbites, etc., in the glassy base, which are then called devitrification products.