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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...Saturn, in astronomy
(Encyclopedia) CE5 Saturn and its ring system as seen from Earth Saturn, in astronomy, 6th planet from the sun. Saturn has 82 confirmed natural satellites, many of which have not been named. Five of the discov...Ring des Nibelungen, Der
(Encyclopedia)Ring des Nibelungen, Der: see Nibelungen. ...pheasant
(Encyclopedia)pheasant, common name for some members of a family (Phasianidae) of henlike birds related to the grouse and including the Old World partridge, the peacock, various domestic and jungle fowls, and the t...Brodgar, Ring of
(Encyclopedia)Brodgar, Ring of: see under Stenness, Loch of. ...ringtail
(Encyclopedia)ringtail or ring-tailed cat: see cacomistle. ...Brodgar, Ness of
(Encyclopedia)Brodgar, Ness of, and Ring of Brodgar: see under Stenness, Loch of. ...ring, mathematical system
(Encyclopedia)ring, in mathematics, system consisting of a set R of elements and two binary operations, such that addition makes R a commutative group and multiplication is associative and distributes over addition...Sullivan, John Lawrence
(Encyclopedia)Sullivan, John Lawrence, 1858–1918, American boxer, b. Roxbury, Mass. After gaining a local reputation in amateur boxing, the Boston Strong Boy, as Sullivan came to be called, toured New England cit...Tweed, William Marcy
(Encyclopedia)Tweed, William Marcy, 1823–78, American politician and Tammany leader, b. New York City. A bookkeeper, he became (1848) a volunteer fireman and as a result acquired influence in his ward. He was an ...Browse by Subject
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