Columbia Encyclopedia

(Encyclopedia) saxifrage săkˈsĭfrĭj [key], common name for several members of the Saxifragaceae, a family of widely varying herbs, shrubs, and small trees of cosmopolitan distribution. They are found especially ...

(Encyclopedia) lentil, leguminous Old World annual plant (Lens culinaris) with whitish or pale blue flowers. Its pods contain two greenish-brown or dark-colored seeds, also called lentils, which when fully ripe are ...

(Encyclopedia) Oliver, Mary, 1935–2019, American poet, b. Cleveland, Ohio, studied Ohio State Univ., Vassar. She published her first collection of poems, No Voyage and Other Poems, in 1963. She was a keen observer...

(Encyclopedia) opal ōˈpəl [key], a mineral consisting of poorly crystalline to amorphous silica, SiO2·nH2O; the water content is quite variable but usually ranges from 3% to 10%. Common opal is usually colorless...

(Encyclopedia) Delany, Samuel R. (Samuel Ray Delany, Jr.), 1942–, African-American wrtier, b. Harlem, New York City. Delany uses science fiction, fantasy, and memoir to explore sexual identity, race, language, and...

(Encyclopedia) Cardigan Welsh corgi, breed of short, long-bodied working dog believed to have been introduced into Wales from Central Europe c.1200 b.c. It stands about 12 in. (30.5 cm) high at the shoulder and weig...

(Encyclopedia) Ahmed I äˈmĕd [key], 1589–1617, Ottoman sultan (1603–17), son and successor of Muhammad III to the throne of the Ottoman Empire. The chief event of his reign was the Treaty of Zsitvatorok (1606...

(Encyclopedia) Aiken, Conrad āˈkĭn [key], 1889–1973, American author, b. Savannah, Ga., grad. Harvard, 1912. Aiken is best known for his poetry, which often is preoccupied with the sound and structure of music;...

(Encyclopedia) cyanobacteria sīˌənōbăktĭrˈēə, sī-ănˌō– [key] or blue-green algae, photosynthetic bacteria that contain chlorophyll. For many years they were classified in the plant kingdom along with ...

(Encyclopedia) silver chloride, chemical compound, AgCl, a white cubic crystalline solid. It is nearly insoluble in water but is soluble in a water solution of ammonia, potassium cyanide, or sodium thiosulfate (“h...