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drought
(Encyclopedia) drought, abnormally long period of insufficient rainfall. Drought cannot be defined in terms of inches of rainfall or number of days without rain, since it is determined by such…Lagoon Nebula
(Encyclopedia) Lagoon Nebula, bright, diffuse nebula in the southern constellation Sagittarius; cataloged as M8 or NGC 6526. It is visible to the naked eye and has an angular area larger than that of…Harlow, Jean
(Encyclopedia) Harlow, Jean, 1911–37, American movie star, b. Kansas City, Mo., as Harlean Carpentier. Harlow brought charm and a sexual knowingness to a series of comedies during the 1930s, becoming…sneeze
(Encyclopedia) sneeze, involuntary violent expiration of air through the nose and mouth. It results from stimulation of the nervous system in the nose, causing sudden contraction of the muscles of…Iapetus, in astronomy
(Encyclopedia) IapetusIapetusīăpˈĭtəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn VIII (or S8), Iapetus is 907 mi (1460 km) in diameter, orbits…Kirshon, Vladimir Mikhailovich
(Encyclopedia) Kirshon, Vladimir MikhailovichKirshon, Vladimir Mikhailovichvlədyēˈmĭr mēkhīˈləvĭch kērshônˈ [key], 1902–38, Russian dramatist. He began his career with Red Dust (1927, tr. 1930), a…suspension, in chemistry
(Encyclopedia) suspension, in chemistry, mixture of two substances, one of which is finely divided and dispersed in the other. Common suspensions include sand in water, fine soot or dust in air, and…ventilation
(Encyclopedia) ventilation, process of supplying fresh air to an enclosed space and removing from it air contaminated by odors, gases, or smoke. Proper ventilation requires also that there be a…aureole, in physics
(Encyclopedia) aureoleaureoleôrˈēōlˌ [key], in physics, luminous circle seen when the sun or other bright light is observed through a diffuse medium, i.e., smoke, thin cloud, fog, haze, or mist. It…Lloyd, Seton Howard Frederick
(Encyclopedia) Lloyd, Seton Howard Frederick, 1902–96, English archaeologist. Trained originally as an architect, he gained his first archaeological experience in 1928 as a member of the Egypt…Trending
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