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Huxley, Thomas Henry

(Encyclopedia)Huxley, Thomas Henry, 1825–95, English biologist and educator, grad. Charing Cross Hospital, 1845. Huxley gave up his own biological research to become an influential scientific publicist and was th...

Gurdon, Sir John Bertrand

(Encyclopedia)Gurdon, Sir John Bertrand, 1933–, British biologist, Ph.D. Oxford, 1962. He has been a researcher at Cambridge since 1971. Gurdon was the joint recipient of the 2012 Nobel Prize in Physiology or Med...

Manaus

(Encyclopedia)Manaus mänousˈ [key], city (1996 pop. 1,158,265), capital of Amazonas state, NW Brazil, on the Rio Negro. It is the chief commercial and cultural center of the upper Amazon region and an important r...

Millett, Kate

(Encyclopedia)Millett, Kate (Katharine Murray Millett), 1934–2017, American feminist author and activist, b. St. Paul, Minn., B.A. Univ. of Minn., 1956, M.A. Oxford, 1958, Ph.D. Columbia, 1968. Her pioneering fem...

Langer, Susanne Knauth

(Encyclopedia)Langer, Susanne Knauth nouth lăngˈər [key], 1895–1986, American philosopher, b. New York City, grad. Radcliffe (B.A., 1920; Ph.D., 1926). After holding various teaching posts, she was a lecturer ...

theorem

(Encyclopedia)theorem, in mathematics and logic, statement in words or symbols that can be established by means of deductive logic; it differs from an axiom in that a proof is required for its acceptance. A lemma i...

Uruguay , river, South America

(Encyclopedia)Uruguay yo͝oˈrəgwā, gwī, Span. o͞oro͞ogwiˈ, o͞oro͞owīˈ [key], river, c.1,000 mi (1,610 km) long, rising in S Brazil and flowing in an arc W, SW, and S to the Río de la Plata, an estuary; ...

Serlio, Sebastiano

(Encyclopedia)Serlio, Sebastiano sāˌbästyäˈnō sĕrˈlyō [key], 1475–1554, Italian Renaissance architect and theoretician, b. Bologna. He was in Rome from 1514 until the sack in 1527 and worked under Baldas...

Salerno

(Encyclopedia)Salerno sälārˈnō [key], city (1991 pop. 148,932), capital of Salerno prov., Campania, S Italy, on the Gulf of Salerno, an inlet of the Tyrrhenian Sea. It is an agricultural, commercial, and indust...

octane number

(Encyclopedia)octane number, figure of merit representing the resistance of gasoline to premature detonation when exposed to heat and pressure in the combustion chamber of an internal-combustion engine. Such detona...