TRAP n.
An old term rather loosely used to designate various dark- colored, heavy igneous rocks, including especially the feldspathic- augitic rocks, basalt, dolerite, amygdaloid, etc., but including also some kinds of diorite. Called also trap rock. Trap tufa, Trap tuff, a kind of fragmental rock made up of fragments and eart…
UNDER prep.
Denoting relation to something that comprehends or includes, that represents or designates, that furnishes a cover, pretext, pretense, or the like; as, he betrayed him under the guise of friendship; Morpheus is represented under the figure of a boy asleep. A crew who, under names of old renown . . . abused Fanatic Egyp…
UNIT n.
eight, time, and the like), in general, a determinate quantity or magnitude of the kind designated, taken as a standard of comparison for others of the same kind, in assigning to them numerical values, as 1 foot, 1 yard, 1 mile, 1 square foot, 1 square yard, 1 cubic foot, 1 peck, 1 bushel, 1 gallon, 1 cent, 1 ounce, 1…
UNLOCATED a.
Not surveyed, or designated by marks, limits, or boundaries, as appropriated to some individual, company, or corporation; as, unlocated lands.
WIRE n.
s of metal, the Birmingham wire gauges and the American wire gauge being often used and designated by the abbreviations B. W.G. and A. W.G. respectively. -- Wire gauze, a texture of finely interwoven wire, resembling gauze. -- Wire grass (Bot.), either of the two common grasses Eleusine Indica, valuable for hay and p…
ZEOLITE n.
A term now used to designate any one of a family of minerals, hydrous silicates of alumina, with lime, soda, potash, or rarely baryta. Here are included natrolite, stilbite, analcime, chabazite, thomsonite, heulandite, and others. These species occur of secondary origin in the cavities of amygdaloid, basalt, and lava,…