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Polaris

(Encyclopedia)Polaris pōlârˈĭs [key] or North Star, star nearest the north celestial pole (see equatorial coordinate system). It is in the constellation Ursa Minor (see Ursa Major and Ursa Minor; Bayer designat...

catacombs

(Encyclopedia)catacombs katˈəkōmz [key], cemeteries of the early Christians and contemporary Jews, arranged in extensive subterranean vaults and galleries. Besides serving as places of burial, the catacombs were...

leopard

(Encyclopedia)leopard, large carnivore of the cat family, Panthera pardus, widely distributed in Africa and Asia. It is commonly yellow, buff, or gray, patterned with black spots and rings. The rings, unlike those ...

Uigurs

(Encyclopedia)Uigurs, Uighurs, or Uygurs all: wēˈgo͝orz [key], Turkic-speaking people of Asia who live mainly in W China. They were the Yue-che of ancient Chinese records and first rose to prominence in the 7th...

hedgehog

(Encyclopedia)hedgehog, Old World insectivorous mammal of the family Erinaceidae. The spiny hedgehogs are found in Africa and Eurasia, except SE Asia. They have rounded bodies up to 13 in. (33 cm) long, very short ...

gazelle

(Encyclopedia)gazelle, name for the many species of delicate, graceful antelopes of the genera Gazella, Eudorcas, and Nanger, inhabiting arid, open country. Most gazelles are found only in Africa, but several speci...

molybdenite

(Encyclopedia)molybdenite məlĭbˈdənīt, mō– [key], a mineral, molybdenum disulfide, MoS2, blue-gray in color, with a metallic luster and greasy feel. It occurs in crystals of the hexagonal system but more co...

Rogation Days

(Encyclopedia)Rogation Days, in the calendar of the Western Church, four days traditionally set apart for solemn processions to invoke God's mercy. They are Apr. 25, the Major Rogation, coinciding with St. Mark's D...

Viotti, Giovanni Battista

(Encyclopedia)Viotti, Giovanni Battista jōvänˈnē bät-tēsˈtä vyôtˈtē [key], 1755–1824, Italian violinist, considered the greatest of his day. He made public appearances until 1783, and the next year he ...

apatite

(Encyclopedia)apatite ăpˈətīt [key], mineral, a phosphate of calcium containing chlorine or fluorine, or both, that is transparent to opaque in shades of green, brown, yellow, white, red, and purple. Apatite is...