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disinfectant
(Encyclopedia)disinfectant, agent that destroys disease-causing microorganisms and their spores. Disinfectants, or germicides, are sometimes considered to be substances applied to inanimate bodies, whereas antisept...Bradford, Andrew
(Encyclopedia)Bradford, Andrew, 1686–1742, colonial printer of Pennsylvania, b. Philadelphia; son of William Bradford (1663–1752). Andrew learned the trade in his father's shop in New York City and in 1712 went...Parkfield
(Encyclopedia)Parkfield, uninc. town (2000 pop. 37), Monterey co., Calif., among rolling hills in the Coast Ranges. A mining center for mercury and coal in the early 1900s, when the town had 900 inhabitants, Parkfi...Palawan
(Encyclopedia)Palawan päläˈwän [key], island (1990 pop. 528,287), 4,550 sq mi (11,785 sq km), 5th largest of the Philippines, N of Borneo and between the Sulu Archipelago and the South China Sea. Lumbering is a...week
(Encyclopedia)week, period of time shorter than the month, commonly seven days. The ancient Egyptians used a 10-day period, as did the French under the short-lived French Revolutionary calendar. In many regions a f...terrestrial planet
(Encyclopedia)terrestrial planet, the earth or a planet that resembles the earth in its physical characteristics. The terrestrial planets in the solar system are the earth, Mercury, Venus, and Mars. These planets a...Davidson, George
(Encyclopedia)Davidson, George, 1825–1911, American geographer and astronomer, b. England. From 1845 to 1895 he was on the staff of the U.S. Coast and Geodetic Survey. He charted (1850–60) the U.S. Pacific coas...alloy
(Encyclopedia)alloy ălˈoi, əloiˈ [key] [O. Fr.,=combine], substance with metallic properties that consists of a metal fused with one or more metals or nonmetals. Alloys may be a homogeneous solid solution, a he...intoxication
(Encyclopedia)intoxication, condition of body tissue affected by a poisonous substance. Poisonous materials, or toxins, are to be found in heavy metals such as lead and mercury, in drugs, in chemicals such as alcoh...bromide
(Encyclopedia)bromide, any of a group of compounds that contain bromine and a more electropositive element or radical. Bromides are formed by the reaction of bromine or a bromide with another substance; they are wi...Browse by Subject
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