Columbia Encyclopedia
Search results
196 results found
fatty acid
(Encyclopedia)fatty acid, any of the organic carboxylic acids present in fats and oils as esters of glycerol. Molecular weights of fatty acids vary over a wide range. The carbon skeleton of any fatty acid is unbran...Dodd, William
(Encyclopedia)Dodd, William, 1729–77, English author. At one time king's chaplain, he ran heavily into debt, forged a bond, and was sentenced to death. Dr. Johnson led a movement to obtain clemency, but Dodd was ...molecular orbital theory
(Encyclopedia)molecular orbital theory, detailed explanation of how electrons are distributed in stable molecules. In the simpler valence theory of the chemical bond, each atom in a molecule is assumed to retain it...cyano group
(Encyclopedia)cyano group sīˈənō, sī-ănˈō [key], in chemistry, functional group that consists of a carbon atom joined to a nitrogen atom by a triple bond; it can be joined to an atom or another group by a s...benzene
(Encyclopedia)benzene bĕnˈzēn, bĕnzēnˈ [key], colorless, flammable, toxic liquid with a pleasant aromatic odor. It boils at 80.1℃ and solidifies at 5.5℃. Benzene is a hydrocarbon, with formula C6H6. The s...saturation, of an organic compound
(Encyclopedia)saturation, of an organic compound, condition occurring when its molecules contain no double or triple bonds and thus cannot undergo addition reactions. For example, ethane (H3C–CH3) is a saturated ...welding
(Encyclopedia)welding, process for joining separate pieces of metal in a continuous metallic bond. Cold-pressure welding is accomplished by the application of high pressure at room temperature; forge welding (forgi...Moore, Douglas Stuart
(Encyclopedia)Moore, Douglas Stuart, 1893–1969, American composer and teacher, b. Cutchogue, N.Y. Moore studied with Horatio Parker, Vincent D'Indy, Nadia Boulanger, and Ernest Bloch. In 1926 he joined the music ...Horsley, Sir Victor Alexander Haden
(Encyclopedia)Horsley, Sir Victor Alexander Haden, 1857–1916, English surgeon and neurologist. A specialist in surgery of the endocrine glands and the nervous system, he devised a noted operation for spinal-cord ...New Netherland
(Encyclopedia)New Netherland, territory included in a commercial grant by the government of Holland to the Dutch West India Company in 1621. Colonists were settled along the Hudson River region; in 1624 the first p...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 +-
