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cyanide process

(Encyclopedia)cyanide process or cyanidation, method for extracting gold from its ore. The ore is first finely ground and may be concentrated by flotation; if it contains certain impurities, it may be roasted. It i...

enteritis

(Encyclopedia)enteritis ĕnˌtərīˈtĭs [key], inflammation of the gastrointestinal tract. Acute enteritis is not usually serious except in infants and older people, in whom the accompanying diarrhea can cause de...

eye bank

(Encyclopedia)eye bank, site for the collection, processing, and assignment of donated eyes. A donor's eyes are removed as soon as possible after death, sealed in a sterile container, and sent to the eye bank. Ther...

epithelium

(Encyclopedia)epithelium ĕpˌəthēˈlēəm [key], sheet of tissue that covers or lines the external and internal body surfaces. The epithelium is closely packed, has little intercellular material, and is lacking ...

injection

(Encyclopedia)injection, introduction of a fluid into the body, usually by means of a needle and syringe. The material injected may be a test substance (as in determining allergic sensitivity or immunity to a disea...

guilt

(Encyclopedia)guilt, in psychology, a term denoting an unpleasant feeling associated with unfulfilled wishes. Sigmund Freud initially contended that sexual drives produce sense of guilt in the superego, the moral c...

Wilhelmina

(Encyclopedia)Wilhelmina vĭlˌhĕlmēˈnä [key], 1880–1962, queen of the Netherlands (1890–1948), daughter and successor of William III. Her mother, Emma of Waldeck-Pyrmont, was regent until 1898. Wilhelmina ...

blockade

(Encyclopedia)blockade, use of naval forces to cut off maritime communication and supply. Blockades may be used to prevent shipping from reaching enemy ports, or they may serve purposes of coercion. The term is rar...

toxic shock syndrome

(Encyclopedia)toxic shock syndrome (TSS). acute, sometimes fatal, disease characterized by high fever, nausea, diarrhea, lethargy, blotchy rash, and sudden drop in blood pressure. It is caused by Staphylococcus aur...

shell money

(Encyclopedia)shell money, medium of exchange consisting of shells, the most widely distributed type of ancient currency. Shells are particularly useful as money because they may be strung in long strips of proport...