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Tangier, island, United States

(Encyclopedia)Tangier, island, E Va., in S Chesapeake Bay. Capt. John Smith first visited the island in 1608, and in 1620 settlers arrived from Cornwall, England. Isolated from the mainland, the people of Tangier d...

tourmaline

(Encyclopedia)tourmaline to͝orˈməlĭn, –lēn [key], complex borosilicate mineral with varying amounts of aluminum, iron, magnesium, sodium, lithium, potassium, and sometimes other elements, used as a gem. It o...

bone marrow

(Encyclopedia)bone marrow, soft tissue filling the spongy interiors of animal bones. Red marrow is the principal organ that forms blood cells in mammals, including humans (see blood). In children, the bones contain...

lionfish

(Encyclopedia)lionfish, common name for a genus (Pterois) of the family Scorpaenidae (see rockfish), comprising venomous subtropical marine fish native to the South Pacific, the Indian Ocean, and the Red Sea. Nativ...

Hampshire College

(Encyclopedia)Hampshire College, at Amherst, Mass.; coeducational; opened 1970. The emphasis of the academic program is on the individual needs of the students. Hampshire participates in a cooperative arrangement w...

Ladysmith

(Encyclopedia)Ladysmith, town, part and seat of Emnambithi-Ladysmith local municipality, KwaZulu-Natal prov., E South Africa. The town has railroad yards and food-processing, textile, and tire factories. It is the ...

Winter, Sir Gregory Paul

(Encyclopedia)Winter, Sir Gregory Paul, 1951–, British biochemist, Ph.D. Cambridge, 1976. He has spent most of his career as a researcher at the Laboratory of Molecular Biology in Cambridge, England, where since ...

Fort Garry

(Encyclopedia)Fort Garry, two trading posts of the Hudson's Bay Company, built on the present-day site of Winnipeg, Man., Canada, at the confluence of the Red and Assiniboine rivers. The first, Upper Fort Garry, wa...

Rh factor

(Encyclopedia)Rh factor, protein substance present in the red blood cells of most people, capable of inducing intense antigenic reactions. The Rh, or rhesus, factor was discovered in 1940 by K. Landsteiner and A. S...

polycythemia

(Encyclopedia)polycythemia pŏlˌēsīthēˈmēə [key], condition characterized by an increase in the production of red blood cells, or erythrocytes, in the blood. Primary polycythemia, also called erythremia, or ...