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porcupine, in zoology

(Encyclopedia)porcupine, member of either of two rodent families, characterized by having some of its hairs modified as bristles, spines, or quills. The quills are loosely attached to the porcupines' skin and pull ...

Cornish hen

(Encyclopedia)Cornish hen or Cornish chicken, breed of poultry that originated in Cornwall, England, but gained prominence only after it was established in the United States. Its body shape is quite different from ...

petroglyphs

(Encyclopedia)petroglyphs: see rock carvings and paintings. ...

lichen

(Encyclopedia)lichen līˈkən [key], usually slow-growing organism of simple structure, composed of fungi (see Fungi) and photosynthetic green algae or cyanobacteria living together in a symbiotic relationship and...

Potawatomi

(Encyclopedia)Potawatomi pŏtˌəwŏtˈəmē [key], Native North Americans whose language belongs to the Algonquian branch of the Algonquian-Wakashan linguistic stock (see Native American languages). They are close...

yew

(Encyclopedia)yew, name for evergreen trees or shrubs of the genus Taxus, somewhat similar to hemlock but bearing red berrylike fruits instead of true cones. Of somber appearance, with dark green leaves, the yew si...

Atlantic Ocean

(Encyclopedia)CE5 Atlantic Ocean [Lat.,=of Atlas], second largest ocean (c.31,800,000 sq mi/82,362,000 sq km; c.36,000,000 sq mi/93,240,000 sq km with marginal seas). The North Atlantic Ocean has some of the w...

shale

(Encyclopedia)shale, sedimentary rock formed by the consolidation of mud or clay, having the property of splitting into thin layers parallel to its bedding planes. Shale tends to be fissile, i.e., it tends to split...

Canyon de Chelly National Monument

(Encyclopedia)Canyon de Chelly National Monument də shāˈ [key] [De Chelly, Sp. corruption of Navajo Tsegi = rock canyon], 83,840 acres (33,955 hectares), NE Ariz.; est. 1931. The area contains the ruins of sever...

Presley, Elvis

(Encyclopedia)Presley, Elvis (Elvis Aaron Presley), 1935–77, American popular singer, b. Tupelo, Miss. Exposed to gospel music from childhoo...

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