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sapphire

(Encyclopedia)sapphire, precious stone. A transparent blue corundum, it is classified among the most valuable of gems. Sapphires are found chiefly in Madagascar, Sri Lanka, and Myanmar and also in Thailand, Tanzani...

topaz

(Encyclopedia)topaz tōˈpăz [key], aluminum silicate mineral with either hydroxyl radicals or fluorine, Al2SiO4(F,OH)2, used as a gem. It is commonly colorless or some shade of pale yellow to wine-yellow; pale bl...

fruit bat

(Encyclopedia)fruit bat, fruit-eating bat found in tropical regions of the Old World. It is relatively large and differs from other bats in the possession of an independent, clawed second digit; it also depends on ...

Dumont d'Urville, Jules Sébastien César

(Encyclopedia)Dumont d'Urville, Jules Sébastien César zhül sābästyăNˈ sāzärˈ dümôNˈ dürvēlˈ [key], 1790–1842, French navigator. While on duty (1819–20) in the E Mediterranean, he saw and recogni...

Hare Krishnas

(Encyclopedia)Hare Krishnas härˈē krĭshˈnəz [key], communalistic religious movement, officially known as the International Society for Krishna Consciousness. Founded in New York City (1966) by A. C. Bhaktived...

Kidman, Nicole

(Encyclopedia)Kidman, Nicole (Nicole Mary Kidman), 1967–, Australian actress, b. Honolulu, Hawaii. She began acting on television as a teenager in Australia, then starred in the film Dead Calm (1989). Her later r...

swan

(Encyclopedia)swan, common name for a large aquatic bird of both hemispheres, related to ducks and geese. It has a long, gracefully curved neck and an extremely long, convoluted trachea which makes possible its far...

pitchblende

(Encyclopedia)pitchblende pĭchˈblĕndˌ [key], dark, lustrous, heavy mineral, a source of radium and uranium. Largely natural uranium oxides, triuranium octaoxide (U3O8) and uranium dioxide (UO2), it usually cont...

Wilkins, Sir George Hubert

(Encyclopedia)Wilkins, Sir George Hubert, 1888–1958, British explorer, b. Australia. He made a number of trips to Antarctica and to the Arctic. Valuable experience gained when he accompanied Vilhjalmur Stefansson...

Wollemi pine

(Encyclopedia)Wollemi pine wŏlˈəmīˌ [key], primitive tree, Wollemia nobilis, of the conifer family Araucariaceae, named after Wollemi National Park in New South Wales, Australia, where it was discovered in 199...