carbonaceous shale formed by destructive distillation of oil shale or by spontaneous combustion of shale after it has been some years in a tip: sometimes used in road making
American Rural Highways T. R. Agg
A Month in Yorkshire Walter White
See under sienna (def 1). an intense dark reddish-brown color. a ferruginous earth used as a yellowish-brown pigment (raw sienna) or, after roasting in a furnace, as a reddish-brown pigment (burnt sienna) the color of such a pigment. noun a reddish-brown dye or pigment obtained by roasting raw sienna in a furnace a dark reddish-orange […]
See under umber (def 1). an earth consisting chiefly of a hydrated oxide of iron and some oxide of manganese, used in its natural state as a brown pigment (raw umber) or, after heating, as a reddish-brown pigment (burnt umber) the color of such a pigment; dark dusky brown or dark reddish brown. Ichthyology. the […]
noun a small orchid, Orchis ustulata, resembling the lady orchid, having dark reddish-brown hoods that give a burnt look to the tip of the flower spike
the nuclear fuel consumed in a reactor, often measured as a percentage of the atoms of fuel that have undergone fission.