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Whitney, Eli

(Encyclopedia)Whitney, Eli, 1765–1825, American inventor of the cotton gin, b. Westboro, Mass., grad. Yale, 1792. When he was staying as tutor at Mulberry Grove, the plantation of Mrs. Nathanael Greene, Whitney w...

wisent

(Encyclopedia)wisent vēˈsənt [key], name for the European bison, Bison bonasus. It is a close relative of the American bison, B. bison. Longer legged and less heavily built than its American cousin, the wisent m...

reproductive system

(Encyclopedia)CE5 Reproductive system reproductive system, in animals, the anatomical organs concerned with production of offspring. In humans and other mammals the female reproductive system produces the femal...

heroin

(Encyclopedia)heroin hĕˈrəwən [key], opiate drug synthesized from morphine (see narcotic). Originally produced in 1874, it was thought to be not only nonaddictive but useful as a cure for respiratory illness an...

Micheaux, Oscar Devereaux

(Encyclopedia)Micheaux, Oscar Devereaux, 1884–1951, American filmmaker and author, b. Metropolis, Ill. The son of former slaves, Micheaux first worked as a Pullman porter, then was a homesteader in South Dakota. ...

midwifery

(Encyclopedia)midwifery mĭdˈwīˌfərē [key], art of assisting at childbirth. The term midwife for centuries referred to a woman who was an overseer during the process of delivery. In ancient Greece and Rome, th...

San Jose scale

(Encyclopedia)San Jose scale, common name for a scale insect, Aspidiotus perniciosus, introduced from China into San Jose, Calif., c.1870 on nursery stock. The insect has since spread throughout much of the United ...

thylacine

(Encyclopedia)thylacine thīˈləsīnˌ [key] or Tasmanian wolf, carnivorous marsupial, or pouched mammal, of New Guinea, Australia, and Tasmania, presumed extinct since 1936. The thylacine is often cited as an exa...

gonorrhea

(Encyclopedia)gonorrhea gŏnərēˈə [key], common infectious disease caused by a bacterium (Neisseria gonorrhoeae), involving chiefly the mucous membranes of the genitourinary tract. It may occasionally spread to...