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domino theory

(Encyclopedia)domino theory, the notion that if one country becomes Communist, other nations in the region will probably follow, like dominoes falling in a line. The analogy, first applied (1954) to Southeast Asia ...

Dryopithecus

(Encyclopedia)Dryopithecus drīˌōpəthēˈkəs, –pĭthˈəkəs [key], an extinct group of apes. Fossils about 20 million years old have been found in Africa, Asia, and Europe. Dryopithecus had a semierect postu...

sainfoin

(Encyclopedia)sainfoin sānˈfoin [key] [Fr.,=holy hay], leguminous perennial herb (Onobrychis viciaefolia) of the family Leguminosae (pulse family) indigenous in S Europe and in temperate W Asia. Sainfoin has for ...

W and Z particles

(Encyclopedia)W and Z particles, elementary particles that mediate, or carry, the fundamental force associated with weak interactions. The discovery of the W and Z particles at CERN near Geneva, Switzerland, in the...

marmot

(Encyclopedia)marmot, ground-living rodent of the genus Marmota, of the squirrel family, closely related to the ground squirrel, prairie dog, and chipmunk. Marmots are found in Eurasia and North America; the best-k...

snuff

(Encyclopedia)snuff, preparation of pulverized tobacco used by sniffing it into the nostrils, chewing it, or placing it between the gums and the cheek. The blended tobacco from which it is made is often aged for tw...

bustard

(Encyclopedia)bustard bŭsˈtərd [key], a heavy-bodied, ground-running bird of the family Otididae. Various species are found throughout the arid regions of Africa, Asia, Australia, and S Europe. Bustards range in...

barrow, in archaeology

(Encyclopedia)barrow, in archaeology, a burial mound. Earth and stone or timber are the usual construction materials; in parts of SE Asia stone and brick have entirely replaced earth. A barrow built primarily of st...

Orkhan

(Encyclopedia)Orkhan ôr-khänˈ [key], 1288?–1362?, Ottoman sultan (1326–1362?), son and successor of Osman I as leader of the Ottoman Turks. He defeated Byzantine Emperor Andronicus III and conquered large pa...

Hatay

(Encyclopedia)Hatay hätīˈ [key], formerly sanjak of Alexandretta, province, 2,141 sq mi (5,545 sq km), S...