ARMOR n.
Steel or iron covering, whether of ships or forts, protecting them from the fire of artillery. Coat armor, the escutcheon of a person or family, with its several charges and other furniture, as mantling, crest, supporters, motto, etc. -- Submarine, a water-tight dress or covering for a diver. See under Submarine.…
AROMATIC; AROMATICAL a.
; fragrant; spicy; strong- scented; odoriferous; as, aromatic balsam. Aromatic compound (Chem.), one of a large class of organic substances, as the oils of bitter almonds, wintergreen, and turpentine, the balsams, camphors, etc., many of which have an aromatic odor. They include many of the most important of the carbon…
ARSENIC n.
he elements, a solid substance resembling a metal in its physical properties, but in its chemical relations ranking with the nonmetals. It is of a steel-gray color and brilliant luster, though usually dull from tarnish. It is very brittle, and sublimes at 356º Fahrenheit. It is sometimes found native, but usually combi…
ARTILLERY n.
the carriages, ammunition, appurtenances, equipments, and persons necessary for working them. (b) The place where the artillery is encamped or collected. -- Artillery train, or Train of artillery, a number of pieces of ordnance mounted on carriages, with all their furniture, ready for marching.