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in vitro fertilization

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

Tay-Sachs disease

(Encyclopedia) Tay-Sachs diseaseTay-Sachs diseasetāˈ-săksˈ [key], rare hereditary disease caused by a genetic mutation that leaves the body unable to produce an enzyme necessary for fat metabolism in…

Crivelli, Carlo

(Encyclopedia) Crivelli, CarloCrivelli, Carlokrēvĕlˈlē [key], b. c.1430, d. after 1493, Venetian painter, who worked chiefly in the Marches. His paintings, notable for their rather harsh conception,…

Cross, Wilbur Lucius

(Encyclopedia) Cross, Wilbur Lucius, 1862–1948, American educator and public official, b. Mansfield, Conn., grad. Yale (B.A., 1885; Ph.D., 1889). He was instructor (1894–97), assistant professor (…

Cossa, Francesco

(Encyclopedia) Cossa, Francesco, or Francesco del CossaCossa, Francesco,fränchĕsˈkō dĕl kôsˈsä [key], c.1435–1477?, Italian painter. He was a leading representative of the Ferrarese school and was…

Francia

(Encyclopedia) FranciaFranciafränˈchä [key], c.1450–1517, Italian painter, goldsmith, and medalist of the early Bolognese school, whose real name was Francesco Raibolini. Until the age of 40 he was…

Harnett, William Michael

(Encyclopedia) Harnett, William MichaelHarnett, William Michaelhärˈnət [key], 1848–92, American painter, b. Ireland. He emigrated to Philadelphia as a child; he first learned engraving and then…

Hinnom

(Encyclopedia) HinnomHinnomhēnōmˈ [key], valley, W and S of Jerusalem. Its ill repute in the Bible emanated from the worship there of foreign gods, including supposed child sacrifice to Molech at…

Medusa, in Greek mythology

(Encyclopedia) MedusaMedusaməd&oomacr;ˈsə [key], in Greek mythology, most famous of the three monstrous Gorgon sisters. She was once a beautiful woman, but she offended Athena, who changed her…

Kilpatrick, William Heard

(Encyclopedia) Kilpatrick, William HeardKilpatrick, William Heardkĭlpăˈtrĭk [key], 1871–1965, American philosopher, b. White Plains, Ga., grad. Mercer College, 1891, Ph.D. Columbia, 1912, and studied…