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booby

(Encyclopedia)booby, common name for some members of the family Sulidae, large, streamlined sea birds. Tropical and subtropical members of the family are called boobies; those of northern waters are called gannets....

Reginald of Châtillon

(Encyclopedia)Reginald of Châtillon shätēyôNˈ [key], d. 1187, Crusader, lord of Krak and Montreal in the Latin Kingdom of Jerusalem. He came to the Holy Land in the Second Crusade and married (1153) Constance,...

pheasant

(Encyclopedia)pheasant, common name for some members of a family (Phasianidae) of henlike birds related to the grouse and including the Old World partridge, the peacock, various domestic and jungle fowls, and the t...

carp

(Encyclopedia)carp, hardy freshwater fish, Cyprinus carpio, the largest member of the minnow family; it is also known as the common carp. A native of Black, Caspian, and Aral sea basins of Eurasia, the carp has bee...

Ptolemy II

(Encyclopedia)Ptolemy II (Ptolemy Philadelphus) fĭlədĕlˈfəs [key], c.308–246 b.c., king of ancient Egypt (285–246 b.c.), of the Macedonian dynasty, son of Ptolemy I and Berenice (c.340–281 b.c.). He cont...

Porter, David Dixon

(Encyclopedia)Porter, David Dixon, 1813–91, American admiral, b. Chester, Pa.; son of David Porter. He served under his father in the Mexican navy before he was appointed (1829) midshipman in the U.S. navy. He he...

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 ...

garnet

(Encyclopedia)garnet, name applied to a group of isomorphic minerals crystallizing in the cubic system. They are used chiefly as gems and as abrasives (as in garnet paper). The garnets are double silicates; one of ...