Columbia Encyclopedia
Search results
500 results found
law of simple multiple proportions
(Encyclopedia)law of simple multiple proportions, in chemistry, the statement that when two or more elements form more than one compound, the ratio of the weights of one element that combine with a given weight of ...multiple birth
(Encyclopedia)multiple birth, bringing forth of more than one offspring at birth. Although many smaller mammals bear several young at a time, multiple births are relatively uncommon in humans and other primates. Tw...multiple personality
(Encyclopedia)multiple personality, a very rare psychological disorder in which a person has two or more distinct personalities, each with its own thoughts, feelings, and patterns of behavior. The personalities oft...multiple sclerosis
(Encyclopedia)multiple sclerosis (MS), chronic, slowly progressive autoimmune disease in which the body's immune system attacks the protective myelin sheaths that surround the nerve cells of the brain and spinal co...Law, Andrew
(Encyclopedia)Law, Andrew, 1749–1821, American composer, b. Milford, Conn. He was a preacher in Philadelphia and Baltimore and, later, a singing teacher in New England. Opposed to the contrapuntal style of Willia...atomic weight
(Encyclopedia)atomic weight, mean (weighted average) of the masses of all the naturally occurring isotopes of a chemical element, as contrasted with atomic mass, which is the mass of any individual isotope. Althoug...law
(Encyclopedia)law, rules of conduct of any organized society, however simple or small, that are enforced by threat of punishment if they are violated. Modern law has a wide sweep and regulates many branches of cond...simple harmonic motion
(Encyclopedia)simple harmonic motion: see harmonic motion. ...diminishing returns, law of
(Encyclopedia)diminishing returns, law of, in economics, law stating that if one factor of production is increased while the others remain constant, the overall returns will relatively decrease after a certain poin...multiple chemical sensitivity
(Encyclopedia)multiple chemical sensitivity (MCS), adverse physical reaction to certain chemicals in susceptible persons. When exposed to the chemicals, people with MCS react with symptoms such as nausea, headache,...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 +-
