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pole, in electricity and magnetism

(Encyclopedia)pole, in electricity and magnetism, point where electric or magnetic force appears to be concentrated. A single electric charge located at a point is sometimes referred to as an electric monopole. An ...

West Nile virus

(Encyclopedia)West Nile virus, microorganism and the infection resulting from it, which typically produces no symptoms or a flulike condition. The virus is a flavivirus and is related to a number of viruses that ca...

quelea

(Encyclopedia)quelea kwēˈlēə [key], common name for an East African weaverbird, Quelea quelea. Less than 5 in. (13 cm) long and weighing slightly more than 1⁄2 oz (1.4 grams), these tiny birds are found throu...

Heleb

(Encyclopedia)Heleb hēˈlĕb [key], in the Bible, mighty man. An alternate form is Heled. He may be the captain Heldai in First Chronicles. ...

wen

(Encyclopedia)wen, benign, slow-growing, painless cyst of the skin resulting from obstruction of the sebaceous gland ducts. It is frequently found on the scalp, ears, face, back, or scrotum. Usually no treatment is...

deed

(Encyclopedia)deed, in law, written document that is signed and delivered by which one person conveys land or other realty (see property) to another. A deed may assure the extent of the conveying party's ownership ...

distortion

(Encyclopedia)distortion, in electronics, undesired change in an electric signal waveform as it passes from the input to the output of some system or device. In an audio system, distortion results in poor reproduct...

alloy

(Encyclopedia)alloy ălˈoi, əloiˈ [key] [O. Fr.,=combine], substance with metallic properties that consists of a metal fused with one or more metals or nonmetals. Alloys may be a homogeneous solid solution, a he...

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...