Columbia Encyclopedia

Search results

500 results found

antenna

(Encyclopedia)antenna ăntĕnˈə [key], in electronics, system of wires or other conductors used to transmit or receive radio or other electromagnetic waves (see radio); sometimes called an aerial. The idea of usi...

foraminiferan

(Encyclopedia)foraminiferan fərămˌənĭfˈərən [key], common name for members of the class Foraminifera, large, shelled ameboid protozoans belonging to the phylum Sarcodina. Most foraminiferan shells are calca...

cold, common

(Encyclopedia)cold, common, acute viral infection of the mucous membranes of the nose and throat, often involving the sinuses. The typical sore throat, sneezing, and fatigue may be accompanied by body aches, headac...

executive order

(Encyclopedia)executive order, in the United States, official document initiated and signed by the president containing directives concerning how the executive branch shall carry out its responsibilities under the ...

premenstrual syndrome

(Encyclopedia)premenstrual syndrome (PMS), any of various symptoms experienced by women of childbearing age in the days immediately preceding menstruation. It is most common in women in their twenties and thirties....

price

(Encyclopedia)price, amount of money for which a unit of goods or services is exchanged. Price is equivalent to market value and may or may not measure the intrinsic value of the goods or services to the buyer or s...

bankruptcy

(Encyclopedia)bankruptcy, in law, settlement of the liabilities of a person or organization wholly or partially unable to meet financial obligations. The purposes are to distribute, through a court-appointed receiv...

representation

(Encyclopedia)representation, in government, the term used to designate the means by which a whole population may participate in governing through the device of having a much smaller number of people act on their b...

autism

(Encyclopedia)autism ôˈtĭzəm [key], developmental disability resulting from a neurological disorder that affects the normal functioning of the brain. It is characterized by the abnormal development of communica...

term limits

(Encyclopedia)term limits, statutory limitations placed on the number of terms officeholders may serve. Focusing especially on members of the U.S. Congress, term limits became an important national political issue ...

Browse by Subject