Columbia Encyclopedia
Search results
218 results found
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...Tweed Ring
(Encyclopedia)Tweed Ring: see Tweed, William Marcy. ...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...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...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) ...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...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...Pan, in astronomy
(Encyclopedia)Pan, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XVIII (or S18), Pan is 12.5 mi (20 km) in diameter, orbits Saturn at a mean distance of 83,000 mi (133...Browse by Subject
- Earth and the Environment +-
- History +-
- Literature and the Arts +-
- Medicine +-
- People +-
- Philosophy and Religion +-
-
Places
+-
- Africa
- Asia
- Australia and Oceania
- Britain, Ireland, France, and the Low Countries
- Commonwealth of Independent States and the Baltic Nations
- Germany, Scandinavia, and Central Europe
- Latin America and the Caribbean
- Oceans, Continents, and Polar Regions
- Spain, Portugal, Italy, Greece, and the Balkans
- United States, Canada, and Greenland
- Plants and Animals +-
- Science and Technology +-
- Social Sciences and the Law +-
- Sports and Everyday Life +-
