SPONGE n.
m by reduction of lead salts, or by compressing finely divided lead; -- used in secondary batteries and otherwise. -- Sponge tree (Bot.), a tropical leguminous tree (Acacia Farnesiana), with deliciously fragrant flowers, which are used in perfumery. -- Toilet sponge, a very fine and superior variety of Mediterranean…
SUPPORT n.
good support, the support of national credit; the assaulting column had the support of a battery. Points of support (Arch.), the horizontal area of the solids of a building, walls, piers, and the like, as compared with the open or vacant spaces. -- Right of support (Law), an easement or servitude by which the owner o…
UNIT n.
a small, insulated Leyden jar, placed between the electrical machine and a larger jar or battery, so as to announce, by its repeated discharges, the amount of electricity passed into the larger jar. -- Unit of heat (Physics), a determinate quantity of heat adopted as a unit of measure; a thermal unit (see under Therm…
ZINC n.
ed in making brass, britannia, and other alloys, and is also largely consumed in electric batteries. Symbol Zn. Atomic weight 64.9 [Formerly written also zink.] Butter of zinc (Old Chem.), zinc chloride, ZnCl2, a deliquescent white waxy or oily substance. -- Oxide of zinc. (Chem.) See Zinc oxide, below. -- Zinc amine…