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Tweed Ring
(Encyclopedia)Tweed Ring: see Tweed, William Marcy. ...ring compound
(Encyclopedia)ring compound: see aromatic compound. ...Ring nebula
(Encyclopedia)Ring nebula, planetary nebula in the northern constellation Lyra; cataloged as M57 or NGC 6720. It is perhaps the most famous and beautiful nebula of this type. Its name describes the appearance of th...cyclic compound
(Encyclopedia)cyclic compound, any one of a class of compounds whose molecules contain a number of atoms bonded together to form a closed chain or ring. If all of the atoms that form the ring are carbon, the compou...Pacquiao, Manny
(Encyclopedia)Pacquiao, Manny (Emmanuel Dapidran Pacquiao), 1978–, Phillipine boxer and politician, b. Mindanao. From his first professional win at age 16 he has gone on to win world titles in eight different wei...Atlas, in astronomy
(Encyclopedia)Atlas, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XV (or S15), Atlas is a small, irregularly shaped (nonspherical) body measuring about 25 mi (40 km) ...Stevenson, Teófilo
(Encyclopedia)Stevenson, Teófilo, 1952–2012, Cuban heavyweight boxer, b. Puerto Padre. One of the greatest amateur boxers ever to enter the ring, he won gold medals at the Munich (1972), Montreal (1976), and Mos...Stenness, Loch of
(Encyclopedia)Stenness, Loch of stĕnĕsˈ, Orcadian stānĭsˈ [key], lake on Mainland island, in the Orkneys, off N Scotland. A headland between Harray and Stenness lochs holds the Standings Stones of Stenness, a...Dedekind, Julius Wilhelm Richard
(Encyclopedia)Dedekind, Julius Wilhelm Richard yo͞olˈyo͝os vĭlˈhĕlm rĭkhˈärt dāˈdəkĭnt [key], 1831–1916, German mathematician. Dedekind studied at Göttingen under the German mathematician Carl Gauss...tautomer
(Encyclopedia)tautomer tôˈtəmər [key], one of two or more structural isomers that exist in equilibrium and are readily converted from one isomeric form to another. Of the various types of tautomerism that are p...Browse by Subject
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