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acetaldehyde

(Encyclopedia)acetaldehyde ĕthˈənălˌ [key], CH3CHO, colorless liquid aldehyde, sometimes simply called aldehyde. It melts at −123℃, boils at 20.8℃, and is soluble in water and ethanol. It is formed by th...

antisense

(Encyclopedia)antisense, DNA or RNA manipulated in a laboratory so that its components (nucleotides) form a complementary copy of normal, or “sense,” messenger RNA (mRNA; see nucleic acid). Antisense techniques...

colchicine

(Encyclopedia)colchicine kŏlˈchəsēnˌ [key], alkaloid extracted from plants of the genus Colchicum and especially from the corms of the autumn crocus, Colchicum autumnale (see meadow saffron). The metabolic eff...

phosgene

(Encyclopedia)phosgene fŏsˈjēn [key], colorless poison gas, first used during World War I by the Germans (1915). When dispersed in air, the gas has the odor of new-mowed hay. The gas is highly toxic; when inhale...

Trail

(Encyclopedia)Trail, city (1991 pop. 7,919), SE British Columbia, Canada, on the Columbia River just N of the Wash. border. It is a metal-smelting center for a mining area that produces lead, zinc, silver, and gold...

ribosome

(Encyclopedia)ribosome: see cell; nucleic acid. ...

Qeqertarsuaq

(Encyclopedia)Qeqertarsuaq gôᵺˈhoun [key], town (1996 pop. 1,095), Qeqertarsuaq dist., W Greenland, on Disko Island; founded in 1773. A fishing base and former whaling base, it has a geophysical observatory and...

Bien Hoa

(Encyclopedia)Bien Hoa bēĕnˈ wä [key], city, Vietnam, c.20 mi (30 km) NE of Ho Chi Minh City. It is famous ...

Lüshun

(Encyclopedia)Lüshun lo͞oˈsho͝onˈ [key], formerly Port Arthur, Jap. Ryojun, former city, SW Liaoning prov., China, at the tip of the Liaodong peninsula. It was formerly combined with Dailian (Dairen) into the ...

Chadwick, Henry, Anglo-American journalist and popularizer of baseball

(Encyclopedia)Chadwick, Henry, 1824–1908, Anglo-American journalist who helped popularize baseball in the United States, b. Exeter, England. Moving to Brooklyn, N.Y., with his family in 1837, he was a cricket rep...