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hydrothermal vent

(Encyclopedia)hydrothermal vent, crack along a rift or ridge in the deep ocean floor that spews out water heated to high temperatures by the magma under the earth's crust. Some vents are in areas of seafloor spread...

Graham, Sylvester

(Encyclopedia)Graham, Sylvester, 1794–1851, American reformer and Presbyterian minister, b. West Suffield, Conn. He advocated a vegetable diet as a cure for intemperance and the use of coarsely ground whole-wheat...

Andrew II

(Encyclopedia)Andrew II, d. 1235, king of Hungary (1205–35), son of Bela III. He continued his predecessors' policy of transferring crown lands to the magnates, and the lesser nobles forced him to issue the Golde...

bandicoot

(Encyclopedia)bandicoot, small marsupial mammal native to Australia and nearby islands. There are 19 species in eight genera. Bandicoots have long, pointed, shrewlike faces; gray or brown fur; and long, bushy, ratl...

Nakasone, Yasuhiro

(Encyclopedia)Nakasone, Yasuhiro yäˌso͝ohēˈrō näˌkäsōˈnā [key], 1918–2019, Japanese political leader and prime minister (1982–87). He served in the Diet after 1946. A political ally of Kakuei Tanaka...

shoebill stork

(Encyclopedia)shoebill stork, common name for a large (up to 54 in./122 cm) tall, storklike bird, Balaeniceps rex. Also known as the whalehead, it is noted for its large head and unusually long and wide, many-color...

Kinorhyncha

(Encyclopedia)Kinorhyncha kĭnˌərĭngˈkə [key], phylum containing about 150 species of tiny pseudocoelomate worms, it is widely distributed in marine sediments. The kinorhynch body is divided into 13 segments, ...

beriberi

(Encyclopedia)beriberi bĕrˈēbĕrˈē [key], deficiency disease occurring when the human body has insufficient amounts of thiamine (vitamin B1). The deficiency may result from improper diet (e.g., ingestion of hi...

physical fitness

(Encyclopedia)physical fitness, combined good health and physical development. The object of any program of physical fitness is to maximize an individual's health, strength, endurance, and skill relative to age, se...

rickets

(Encyclopedia)rickets or rachitis rəkīˈtĭs [key], bone disease caused by a deficiency of vitamin D or calcium. Essential in regulating calcium and phosphorus absorption by the body, vitamin D can be formed in t...