TROY n.
d. It was so named from Troyes, in France, where it was first adopted in Europe. The troy ounce is supposed to have been brought from Cairo during the crusades. In this weight the pound is divided into 12 ounces, the ounce into 20 pennyweights, and the pennyweight into 24 grains; hence, the troy ounce contains 480 grai…
UNDER prep.
ame as Under canvas (a), above. Totten. -- Under sentence, having had one's sentence pronounced. -- Under the breath, with low voice; very softly. -- Under the lee (Naut.), to the leeward; as, under the lee of the land. -- Under the rose. See under Rose, n. -- Under water, below the surface of the water. -- Under…
UNIT n.
eyden 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 Thermal). Water is the sub…