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eukaryote

(Encyclopedia)eukaryote yo͞okârˈē-ōtˌ [key], a cell or organism composed of cells that have a membrane-bound nucleus and organelles (mitochondria, chloroplasts; see cell, in biology) and genetic material orga...

Uppsala

(Encyclopedia)Uppsala ŭpˈsələ, –säˌlä [key], city (1990 pop. 109,500), capital of Uppsala co., E Sweden, on the Fyrisån River. It is an industrial and cultural center and a railroad junction. Manufactures...

Butler, Samuel, 1835–1902, English author

(Encyclopedia)Butler, Samuel, 1835–1902, English author. He was the son and grandson of eminent clergymen. In 1859, refusing to be ordained, he went to New Zealand, where he established a sheep farm and in a few ...

Port Authority of New York and New Jersey

(Encyclopedia)Port Authority of New York and New Jersey, self-sustaining public corporation established in 1921 by the states of New York and New Jersey to administer the activities of the New York–New Jersey por...

signaling

(Encyclopedia)signaling, transmission of information by visible, audible, or other detectable means. Since prehistoric times humans have sought and employed ever more effective means of communicating over distance....

turtle

(Encyclopedia)turtle, a reptile of the order Chelonia, with strong, beaked, toothless jaws and, usually, an armorlike shell. The shell normally consists of bony plates overlaid with horny shields. The upper portion...

mantis shrimp

(Encyclopedia)mantis shrimp, marine crustacean of the order Stomatopoda, characterized by a pair of enlarged appendages, called maxillipeds, that form powerful claws for seizing prey. The last two segments of each ...

Chaetognatha

(Encyclopedia)CE5 Anatomy of an arrow worm, Sagitta, representative of the phylum Chaetognatha Chaetognatha kētôgnăthˈə [key], phylum of predominantly pelagic marine animals commonly known as arrowworms. A...

Padre Island

(Encyclopedia)Padre Island pädˈrē, pădˈrē [key], low, sandy island, c.115 mi (185 km) long, less than 3 mi (4.8 km) wide, S Tex. It is characterized by large, irregular sand dunes, sparse vegetation, and a st...

Gardner, John William

(Encyclopedia)Gardner, John William, 1912–2002, American public official, U.S. secretary of health, education, and welfare (1965–68), b. Los Angeles. After teaching psychology at Connecticut and Mt. Holyoke col...