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obsidian

(Encyclopedia)obsidian ŏbsĭdˈēən [key], a volcanic glass, homogeneous in texture and having a low water content, with a vitreous luster and a conchoidal fracture. The color is commonly black, but may be some s...

miniature pinscher

(Encyclopedia)miniature pinscher, breed of lively toy dog originating in Germany in the late 19th cent. It stands from 10 to 12 in. (25.4–30.5 cm) high at the shoulder and weighs from 8 to 10 lb (3.6–4.5 kg). I...

teff

(Encyclopedia)teff, annual plant, Eragrostis tef, of the grass family (Poaceoe), whose seeds are a staple grain in Ethiopia and Eritrea. It is a gluten-free cereal grain, high in iron, protein, calcium, vitamin C, ...

Rietveld, Gerrit Thomas

(Encyclopedia)Rietveld, Gerrit Thomas gĕrĭtˈ tōˈməs rētˈfĕlt [key], 1888–1965, Dutch architect and furniture designer. At first a cabinetmaker, Rietveld created (c.1917) a chair that was an important con...

Cullen, Countee

(Encyclopedia)Cullen, Countee kounˈtēˈ [key], 1903–46, American poet, b. New York City, grad. New York Univ. 1925, M.A. Harvard, 1926. A major writer of the Harlem Renaissance—a flowering of black artistic a...

Chesapeake Bay retriever

(Encyclopedia)Chesapeake Bay retriever, breed of large sporting dog developed in the United States. It stands about 24 in. (61 cm) high at the shoulder and weighs about 65 lb (29.5 kg). Its thick, short double coat...

chromite

(Encyclopedia)chromite krōˈmīt [key], dark brown to black mineral. It is an iron-chromium oxide, FeCr2O4, with traces of magnesium and aluminum. Its crystals are octahedral, but rare; it usually occurs as irregu...

Baker, George Pierce

(Encyclopedia)Baker, George Pierce, 1866–1935, American educator, b. Providence, R.I., grad. Harvard, 1887. He taught (1888–1924) in the English department at Harvard and there conceived and instituted (1906) t...

Ogata Kenzan

(Encyclopedia)Ogata Kenzan ōgäˈtä kĕnˈzän [key] 1663–1743, Japanese potter and painter; younger brother of Ogata Korin. A follower of the Rimpa school, he set up kilns for the production of ceramics in the...

amphibole

(Encyclopedia)amphibole ămˈfəbōlˌ [key], any of a group of widely distributed rock-forming minerals, magnesium-iron silicates, often with traces of calcium, aluminum, sodium, titanium, and other elements. The ...