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intrauterine device

(Encyclopedia)intrauterine device (IUD), variously shaped birth control device, usually of plastic, which is inserted into the uterus by a physician. The IUD may contain copper or levonorgestrel, a progestin (a hor...

rubella

(Encyclopedia)rubella or German measles, acute infectious disease of children and young adults. It is caused by a filterable virus that is spread by droplet spray from the respiratory tract of an infected individua...

adoption

(Encyclopedia)adoption, act by which the legal relation of parent and child is created. Adoption was recognized by Roman law but not by common law. Statutes first introduced adoption into U.S. law in the mid-19th c...

population

(Encyclopedia)population, the inhabitants of a given area, but perhaps most importantly, the human inhabitants of the earth (numbering about 7.5 billion in 2017), who by their increasing numbers and corresponding i...

Torrijos Herrera, Omar

(Encyclopedia)Torrijos Herrera, Omar ōmärˈ tōrēˈhōs ārāˈrä [key], 1929–81, military leader, dictator of Panama (1968–78). As a lieutenant colonel, he led, together with Col. Boris Martínez, the coup...

prostaglandin

(Encyclopedia)prostaglandin prŏsˌtəglănˈdən [key], any of a group of about a dozen compounds synthesized from fatty acids in mammals as well as in lower animals. Prostaglandins are highly potent substances th...

fertility rites

(Encyclopedia)fertility rites, magico-religious ceremonies to insure an abundance of food and the birth of children. The rites, expressed through dances, prayers, incantations, and sacred dramas, seek to control th...

Place, Francis

(Encyclopedia)Place, Francis, 1771–1854, English radical reformer. A tailor for many years, he educated himself and made his shop a meeting center for radicals and reformers. He was especially active in the trade...

Chang Tso-lin

(Encyclopedia)Chang Tso-lin jäng tsōˈ-lĭnˈ [key], 1873–1928, Chinese general. Chang was of humble birth. As the leader of a unit of Manchurian militia he assisted (1904–5) the Japanese in the Russo-Japanes...

Wright, Frances

(Encyclopedia)Wright, Frances (Fanny Wright), 1795–1852, Scottish-American reformer, later known as Mme Darusmont, b. Dundee, Scotland. After her first tour (1818–20) of the United States she wrote an enthusias...