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Grignard reagent

(Encyclopedia)Grignard reagent grēnyärdˈ rēāˈjənt [key], any of an important class of extremely reactive chemical compounds used in the synthesis of hydrocarbons, alcohols, carboxylic acids, and other compou...

Majid, Ali Hassan al-

(Encyclopedia)Majid, Ali Hassan al- äˈlē hāˈsän äl-mäjēdˈ [key], 1941–2010, Iraqi general and Ba'athist, cousin of Saddam Hussein. After Hussein took power (1979), Majid played a pivotal role in the Ba'...

borax

(Encyclopedia)borax or sodium tetraborate decahydrate sōˈdēəm tĕˌtrəbôrˈāt dĕkˌəhīˈdrāt [key], chemical compound, Na2B4O7·10H2O; sp. gr. 1.73; slightly soluble in cold water; very soluble in hot wa...

biophysics

(Encyclopedia)biophysics, application of various methods and principles of physical science to the study of biological problems. In physiological biophysics physical mechanisms have been used to explain such biolog...

synapse

(Encyclopedia)synapse sĭnˈăps [key], junction between various signal-transmitter cells, either between two neurons or between a neuron and a muscle or gland. A nerve impulse reaches the synapse through the axon,...

sulfide

(Encyclopedia)sulfide, chemical compound containing sulfur and one other element or sulfur and a radical. Sulfides may be salts or esters of hydrogen sulfide, H2S, or may be formed directly, e.g., by heating a meta...

potassium chloride

(Encyclopedia)potassium chloride, chemical compound, KCl, a colorless or white, cubic, crystalline compound that closely resembles common salt (sodium chloride). It is soluble in water, alcohol, and alkalies. Potas...

wave, in physics

(Encyclopedia)wave, in physics, the transfer of energy by the regular vibration, or oscillatory motion, either of some material medium or by the variation in magnitude of the field vectors of an electromagnetic fie...

Ako

(Encyclopedia)Ako äkōˈ [key], city, Hyogo prefecture, W Honshu, Japan, on the Harima Sea. Relying on its steel and chemical industries, Ako has become one of Japan's most polluted in...

Miyako

(Encyclopedia)Miyako mēyäˈkō [key], city (1990 pop. 58,505), Iwate prefecture, NE Honshu, Japan, on the Hei River and Miyako Bay. It is an important fishing port with large timber and chemical industries. The c...