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Frémont, John Charles

(Encyclopedia)Frémont, John Charles, 1813–90, American explorer, soldier, and political leader, b. Savannah, Ga. He taught mathematics to U.S. naval cadets, then became an assistant on a surveying expedition (18...

hieroglyphic

(Encyclopedia)CE5 Examples of hieroglyphics hieroglyphic hīˌrəglĭfˈĭk, hīˌərə– [key] [Gr.,=priestly carving], type of writing used in ancient Egypt. Similar pictographic styles of Crete, Asia Minor,...

Hudson, river, United States

(Encyclopedia)Hudson, river, c.315 mi (510 km) long, rising in Lake Tear of the Clouds, on Mt. Marcy in the Adirondack Mts., NE N.Y., and flowing generally S to Upper New York Bay at New York City; the Mohawk River...

aphid

(Encyclopedia)aphid or plant louse, tiny, usually green, soft-bodied, pear-shaped insect injurious to vegetation. It is also called greenfly and blight. Aphids are mostly under 1⁄4 in. (6 mm) long. Some are wingl...

in vitro fertilization

(Encyclopedia)in vitro fertilization vēˈtrō, vĭˈtrō [key] (IVF), technique for conception of a human embryo outside the mother's body. Several ova, or eggs, are removed from the mother's body and placed in sp...

Joan of Arc

(Encyclopedia)Joan of Arc, Fr. Jeanne D'Arc (zhän därk), 1412?–31, French saint and national heroine, called the Maid of Orléans; daughter of a farmer of Domrémy on the border of Champagne and Lorraine. In...

Ford, Henry

(Encyclopedia)Ford, Henry, 1863–1947, American industrialist, pioneer automobile manufacturer, b. Dearborn, Mich. Henry Ford's son, Edsel Bryant Ford, 1893–1943, b. Detroit, shared in the control of the vast ...

Mbeki, Thabo Mvuyelwa

(Encyclopedia)Mbeki, Thabo Mvuyelwa täˈbō mvo͝oyĕlˈə mbĕkˈē [key], 1942–, South African political leader. Mbeki was born into a politically active family; his father, Govan Mbeki, an official with the A...

mulberry

(Encyclopedia)CE5 Red mulberry, Morus rubra mulberry, common name for the Moraceae, a family of deciduous or evergreen trees and shrubs, often climbing, mostly of pantropical distribution, and characterized by ...

clam

(Encyclopedia)clam, common name for certain bivalve mollusks, especially for marine species that live buried in mud or sand and have valves (the two pieces of the shell) of equal size. The oval valves, which cover ...