Columbia Encyclopedia

Search results

218 results found

Enceladus

(Encyclopedia)Enceladus ĕnsĕlˈədəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn II (or S2), Enceladus is 310 mi (500 km) in diameter, orbits Saturn at a m...

Strauss-Kahn, Dominique Gaston André

(Encyclopedia)Strauss-Kahn, Dominique Gaston André dōmēnēkˈ gästôNˈ äNdrāˈ sträs-känˈ [key], 1949–, French economist, lawyer, and politician , b. Neuilly, Ph.D. Univ. of Paris, 1975. A lecturer and ...

hallucinogenic drug

(Encyclopedia)hallucinogenic drug həlo͞oˌsənōjĕnˈĭk [key], any of a group of substances that alter consciousness; also called psychotomimetic (i.e., mimicking psychosis), mind-expanding, or psychedelic drug...

particle accelerator

(Encyclopedia)CE5 Linear accelerator (LINAC) CE5 Cyclotron: As the charged particles move faster, they spiral out to the edge of the Ds. particle accelerator, apparatus used in nuclear physics to produce bea...

fructose

(Encyclopedia)CE5 fructose lĕvˈyəlōsˌ [key], or fruit sugar, simple sugar found in honey and in the fruit and other parts of plants. It is much sweeter than sucrose (cane sugar). It is best obtained by hydr...

Iapetus, in astronomy

(Encyclopedia)Iapetus īăpˈĭtəs [key], in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn VIII (or S8), Iapetus is 907 mi (1460 km) in diameter, orbits Saturn at a mean...

Roche limit

(Encyclopedia)Roche limit, the closest distance that a celestial body held together only by its own gravity can come to a planet without being pulled apart by the planet's tidal (gravitational) force. This distance...

peptide

(Encyclopedia)peptide, organic compound composed of amino acids linked together chemically by peptide bonds. The peptide bond always involves a single covalent link between the α-carboxyl (oxygen-bearing carbon) o...

Pärt, Arvo

(Encyclopedia)Pärt, Arvo pârt [key], 1935–, Estonian composer, b. Paide; grad. Tallinn Conservatory (1963). He worked for Estonian radio (1958–67), left his homeland (1980, then part of the USSR), and settled...

Cassini

(Encyclopedia)Cassini käs-sēˈnē [key], name of a family of Italian-French astronomers, four generations of whom were directors of the Paris Observatory. Gian Domenico Cassini, 1625–1712, was born in Italy and...

Browse by Subject