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Franciscans

(Encyclopedia)Franciscans frănsĭsˈkənz [key], members of several Roman Catholic religious orders following the rule of St. Francis (approved by Honorius III, 1223). There are now three organizations of Francisc...

Columbia, river, Canada and the United States

(Encyclopedia)Columbia, river, c.1,210 mi (1,950 km) long, rising in Columbia Lake, SE British Columbia, Canada. It flows first NW in the Rocky Mt. Trench, then hooks sharply about the Selkirk Mts. to flow S throug...

poliomyelitis

(Encyclopedia)poliomyelitis pōˌlēōmīˌəlīˈtĭs [key], polio, or infantile paralysis, acute viral infection, mainly of children but also affecting older persons. Historically, there were three immunologic ty...

eagle

(Encyclopedia)eagle, common name for large predatory birds of the family Accipitridae (hawk family), found in all parts of the world. Eagles are similar to the buteos, or buzzard hawks, but are larger both in lengt...

finch

(Encyclopedia)finch, common name for members of the Fringillidae, the largest family of birds (including over half the known species), found in most parts of the world except Australia. The true finches are charact...

pompano

(Encyclopedia)pompano pŏmˈpənō [key], common name for fishes of the genus Trachinotus, members of a large and important family (Carangidae) of mackerellike fishes, abundant in warm seas around the world. They h...

mercury, chemical element

(Encyclopedia)mercury or quicksilver [from the Roman god Mercury], metallic chemical element; symbol Hg [Lat. hydrargyrum=liquid silver]; at. no. 80; at. wt. 200.59; m.p. −38.842℃; b.p. 356.58℃; sp. gr. 13.55...

bear, in zoology

(Encyclopedia)bear, large mammal of the family Ursidae in the order Carnivora, found almost exclusively in the Northern Hemisphere. Bears have large heads, bulky bodies, massive hindquarters, short, powerful limbs,...

Angkor

(Encyclopedia)Angkor ăngˈkôr [key], site of several capitals of the Khmer Empire, north of Tônlé Sap, NW Cambodia, for about five and a half centuries (9th to 15th), the heart of the empire. Extending over an ...

color

(Encyclopedia)color, effect produced on the eye and its associated nerves by light waves of different wavelength or frequency. Light transmitted from an object to the eye stimulates the different color cones of the...