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oxidation and reduction

(Encyclopedia)oxidation and reduction, complementary chemical reactions characterized by the loss or gain, respectively, of one or more electrons by an atom or molecule. Originally the term oxidation was used to re...

acids and bases

(Encyclopedia)acids and bases, two related classes of chemicals; the members of each class have a number of common properties when dissolved in a solvent, usually water. Another theory that provides a very broad ...

permutations and combinations

(Encyclopedia)permutations and combinations: see probability. ...

orchestra and orchestration

(Encyclopedia)CE5 Typical seating plan of a symphony orchestra orchestra and orchestration, an orchestra is a musical ensemble of mixed instruments based on strings and winds, under the direction of a conductor...

visit and search

(Encyclopedia)visit and search: see search, right of. ...

Bright, Richard

(Encyclopedia)Bright, Richard, 1789–1858, English physician. In London he was the leading consultant of his time, and he contributed many important clinical observations. He was the author of the significant Repo...

chlamydia

(Encyclopedia)chlamydia kləmĭdˈēə [key], genus of microorganisms that cause a variety of diseases in humans and other animals. Psittacosis, or parrot fever, caused by the species Chlamydia psittaci, is transmi...

bunion

(Encyclopedia)bunion, swelling or thickening around the first joint of the big toe. The toe is forced inward and compresses the other toes. The fluid-filled sac, or bursa, in the toe joint becomes inflamed (a condi...

Kentucky, University of

(Encyclopedia)Kentucky, University of, mainly at Lexington; coeducational; land-grant and state supported; opened 1865 as part of Kentucky Univ., became a separate state agricultural and mechanical college in 1878 ...

whooping cough

(Encyclopedia)whooping cough or pertussis, highly communicable infectious disease caused by the bacterium Bordetella pertussis. The early or catarrhal stage of whooping cough is manifested by the usual symptoms of ...