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De Bary, Heinrich Anton

(Encyclopedia)De Bary, Heinrich Anton hīnˈrĭkh änˈtōn də bärēˈ [key], 1831–88, German botanist. He was professor at the universities of Freiburg in Breisgau (1855–66) and Halle (1867–72) and first r...

Sheridan

(Encyclopedia)Sheridan, city (1990 pop. 13,900), seat of Sheridan co., N Wyo., on Goose Creek E of the Bighorn Mts., in a mineral, livestock, and irrigated farm region; inc. 1884. It is a regional trade and market ...

Ochoa, Severo

(Encyclopedia)Ochoa, Severo sāvāˈrō ōchōˈä [key], 1905–93, American biochemist and educator, b. Spain, M.D. Univ. of Madrid, 1929. After teaching at the universities of Madrid, Heidelberg, and Oxford, he ...

isogamy

(Encyclopedia)isogamy īsŏgˈəmē [key], in biology, a condition in which the sexual cells, or gametes, are of the same form and size and are usually indistinguishable from each other. Many algae and some fungi h...

Dinoflagellata

(Encyclopedia)dinoflagellata dīˌnōflăjˌəlätˈə, –lāˈtə [key], phylum (division) of unicellular, mostly marine algae, called dinoflagellates. In some classification systems this division is called Pyrrh...

Chodorow, Nancy

(Encyclopedia)Chodorow, Nancy chōdˈərōˌ [key], 1944–, American psychologist. A professor at the Univ. of California at Berkeley, Chodorow has extensively pursued the question of why women desire motherhood. ...

Greenfield Village

(Encyclopedia)Greenfield Village, reproduction of an early American village, est. 1933 by Henry Ford at Dearborn, Mich., as part of the Edison Institute. A white-spired church, a town hall, an inn, a school, a cour...

Blakeslee, Albert Francis

(Encyclopedia)Blakeslee, Albert Francis, 1874–1954, American botanist, b. Genesee, New York. He received his Ph.D. at Harvard (1904) and was a member of the faculty until 1907. After several years as professor at...

sound recording

(Encyclopedia)sound recording, process of converting the acoustic energy of sound into some form in which it can be permanently stored and reproduced at any time. In 1855 the inventor Leon Scott constructed a devic...

mezzotint

(Encyclopedia)mezzotint mĕtˈsətĭnt, mĕdˈzə–, mĕzˈə– [key] [Ital.,=halftint], method of copper or steel engraving in tone. A Dutch officer, Ludwig von Siegen, is given credit for the invention of mezzo...