Columbia Encyclopedia

Search results

500 results found

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...

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...

Rivera, José Eustasio

(Encyclopedia)Rivera, José Eustasio rēvāˈrä [key], 1889–1928, Colombian novelist. Rivera served on the commission to fix the Venezuelan boundary deep in the rain forest of the Amazon basin. The jungle becam...

Iquique

(Encyclopedia)Iquique ēkēˈkā [key], city (1990 est. pop. 148,500), capital of Iquique prov., N Chile. A port on the Pacific, it exports nitrates and ore from the Atacama Desert. The city, founded in the 16th ce...

Kenai Fjords National Park

(Encyclopedia)Kenai Fjords National Park, 669,983 acres (271,248 hectares), S Alaska. The park features the great Harding Icefield and its radiating glaciers, many of which descend to tidewater, and a magnificent s...

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. ...

methyl salicylate

(Encyclopedia)methyl salicylate səlĭsˈəlātˌ [key], methyl ester of salicylic acid. ...

aqua fortis

(Encyclopedia)aqua fortis äkˈwə fôrˈtĭs [key]: see nitric acid. ...

act of God

(Encyclopedia)act of God, in law, an accident caused by the operation of extraordinary natural force. The effect of ordinary natural causes (e.g., that rain will leak through a defective roof) may be foreseen and a...