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Ku
(Encyclopedia)Ku, formerly the suggested symbol for the element kurchatovium, now called rutherfordium. ...Cb
(Encyclopedia)Cb, formerly the symbol for the element columbium, now called niobium (Nb). ...actinide series
(Encyclopedia)actinide series, a series of radioactive metallic elements in Group 3 of the periodic table. Members of the series are often called actinides, although actinium (at. no. 89) is not always considered a...poison
(Encyclopedia)poison, any agent that may produce chemically an injurious or deadly effect when introduced into the body in sufficient quantity. Some poisons can be deadly in minute quantities, others only if relati...Hevelius, Johannes
(Encyclopedia)Hevelius, Johannes yōhänˈəs hāvāˈlēo͝os [key], 1611–87, Polish astronomer, b. Danzig. From a finely equipped observatory in his house at Danzig, assisted by his wife Elizabeth, he made valu...Connecticut Wits
(Encyclopedia)Connecticut Wits or Hartford Wits, an informal association of Yale students and rectors formed in the late 18th cent. At first they were devoted to the modernization of the Yale curriculum and declari...Altai
(Encyclopedia)Altai or Altay both: ăltīˈ, äl–, ălˈtī, Rus. əltīˈ [key], geologically complex mountain system of central Asia; largely in the Altai Republic, Russia, and in Kazakhstan, but extending into...Browse by Subject
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