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domestic service

(Encyclopedia)domestic service, work performed in a household by someone who is not a member of the family. It was performed by slaves in many early civilizations, e.g., in Greece and Rome. Under the feudal system ...

atom

(Encyclopedia)CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)], basic unit of matte...

lignin

(Encyclopedia)lignin lĭgˈnĭn [key], a highly polymerized and complex chemical compound especially common in woody plants. The cellulose walls of the wood become impregnated with lignin, a process called lignific...

Medinipur

(Encyclopedia)Medinipur mĭdˈnəpûrˌ [key], town (1991 pop. 125,498), West Bengal state, E India, on the Kasai River. It is a district administrative center and has textile and chemical manufactures. A canal lin...

Iligan

(Encyclopedia)Iligan ēlēˈgän [key], city, capital of Lanao del Norte prov., W central Mindanao, the Phi...

Alicante

(Encyclopedia)Alicante älēkänˈtā [key], city, capital of Alicante prov., SE Spain, in Valencia. A Mediterranean port, it has exports of wine, oil, cereals, fruit, and esparto from ...

Chongjin

(Encyclopedia)Chongjin or Chungjin both: chŭngˈjĕnˈ [key], Jap. Seishin, city, NE North Korea, an i...

Engels

(Encyclopedia)Engels ĕngˈgĭls [key], city (1989 pop. 181,000), E European Russia, a port on the Volga River. It has a large chemical fiber complex. Founded by Ukrainian settlers, it was a major destination of Ge...

Roebuck, John

(Encyclopedia)Roebuck, John, 1718–94, English physician, chemist, and inventor. He acted as a chemical consultant to local industries in Birmingham and invented the lead chamber process of manufacturing sulfuric ...

Sarnia

(Encyclopedia)Sarnia, city (1991 pop. 74,376), S Ont., Canada, on the St. Clair River, at the south end of Lake Huron and opposite Port Huron, Mich. The two cities are connected by a railroad tunnel, and there is a...