Columbia Encyclopedia

Search results

500 results found

oxytocin

(Encyclopedia)oxytocin ŏksĭtōˈsĭn [key], hormone released from the posterior lobe of the pituitary gland that facilitates uterine contractions and the milk-ejection reflex. The structure of oxytocin, a cyclic ...

Old Red Sandstone

(Encyclopedia)Old Red Sandstone, series of red and brown sandstones, conglomerates, and shales deposited in Wales and Scotland and in England near the Welsh and Scottish borders in the Devonian period of geologic t...

Valens

(Encyclopedia)Valens väˈlənz [key], c.328–378, Roman emperor of the East (364–78). Brother and coregent of Valentinian I, Valens followed in most respects his brother's policies but, unlike him, embraced Ari...

Wolfe, James

(Encyclopedia)Wolfe, James, 1727–59, British soldier. After a distinguished record in European campaigns, he was made (1758) second in command to Jeffery Amherst in the last of the French and Indian Wars. Through...

Zaïmis, Alexander

(Encyclopedia)Zaïmis, Alexander zäˈēmēs [key], 1855–1936, Greek statesman. At the end of the disastrous 1897 war with Turkey, he became premier for the first time (1897–99). He was again premier in 1901–...

bongo

(Encyclopedia)bongo bŏngˈgō [key], spiral-horned antelope, Tragelaphus eurycerus, found in jungles and thick bamboo forests of equatorial Africa. Shy, elusive animals, bongos never emerge into the open and are s...

Bonhoeffer, Dietrich

(Encyclopedia)Bonhoeffer, Dietrich dēˈtrĭkh bônˈhöfər [key], 1906–45, German Protestant theologian. Bonhoeffer, influenced early by the thinking of the young Karl Barth, urged a conformation to the form of...

byliny

(Encyclopedia)byliny bĭlēˈnē [key] [Rus.,=what has happened], Russian scholarly term first applied in the 1840s to a great body of narrative and heroic poems. They are called by the folk stariny [Rus.,=what is ...

Jidda

(Encyclopedia)Jidda jĕ– [key], city (1993 est. pop. 2,058,000), Hejaz, W Saudi Arabia, on the Red Sea. Jidda is the port of Mecca (c.45 mi/72 km to the east) and annually receives a huge influx of pilgrims, main...

molting

(Encyclopedia)molting, periodical shedding and renewal of the outer skin, exoskeleton, fur, or feathers of an animal. In most animals the process is triggered by secretions of the thyroid and pituitary glands. Near...

Browse by Subject