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triumphal arch

(Encyclopedia)CE5 Triumphal arch triumphal arch, monumental structure embodying one or more arched passages, frequently built to span a road and designed to honor a king or general or to commemorate a military ...

parthenogenesis

(Encyclopedia)parthenogenesis pärˌthənōjĕnˈəsĭs [key] [Gr.,=virgin birth], in biology, a form of reproduction in which the ovum develops into a new individual without fertilization. Natural parthenogenesis ...

stalactite and stalagmite

(Encyclopedia)stalactite stəlăgˈmīt [key], mineral forms often found in caves; sometimes collectively called dripstone. A stalactite is an icicle-shaped mass of calcite attached to the roof of a limestone caver...

Perugia

(Encyclopedia)Perugia pāro͞oˈjä [key], city (1991 pop. 144,732), capital of Umbria and of Perugia prov., central Italy, situated on a hill overlooking the valley of the Tiber River. It is a commercial, industri...

Plymouth, city, England

(Encyclopedia)Plymouth, city and unitary authority (1991 pop. 238,583), SW England, on Plymouth Sound. The three towns that Plymouth has comprised since 1914 are Plymouth, Stonehouse, and Devonport; the suburbs of ...

Youth, Isle of

(Encyclopedia)Youth, Isle of, Span. Isla de la Juventud, island and special municipality (1989 est. pop. 71,500), 1,180 sq mi (3,056 sq km), off SW Cuba, from which it is separated by the Batabanó Gulf. Until 1978...

Castro, Inés de

(Encyclopedia)Castro, Inés de, or Inez de Castro both: īˈnĕz də kăsˈtrō, Port. ēnĕshˈ dĭ käshˈtro͝o [key], d. 1355, Spanish noblewoman, a celebrated beauty, and a tragic figure in Portuguese history....

National Gallery of Art

(Encyclopedia)National Gallery of Art, Washington, D.C., an affiliate of the Smithsonian Institution, established by an act of Congress, 1937. Andrew W. Mellon donated funds for construction of the building as well...

serpentine

(Encyclopedia)serpentine sûrˈpəntēn, –tīn [key], hydrous silicate of magnesium. It occurs in crystalline form only as a pseudomorph having the form of some other mineral and is generally found in the form of...

Cyclades

(Encyclopedia)Cyclades sīˈklədēz [key], Gr. Kikládhes [Gr.,=circular], island group, c.1,000 sq mi (2,...