Perforation — For perforations in an oil well, see Perforation (oil well). For perforation in medicine and surgery, see Organ perforation. A perforation is a small hole in a thin material or web. There is usually more than one perforation in an organized… … Wikipedia
Perforation — (lat., »Durchbohrung«), der Vorgang, bei dem infolge einer Trennung der Wandung eine bis dahin geschlossene Höhle oder ein Kanal eröffnet oder ein solides Organ durchbohrt (perforiert) wird. Dieselbe erfolgt durch Verletzung mittels eines… … Meyers Großes Konversations-Lexikon
perforation — Abnormal opening in a hollow organ or viscus. SYN: tresis. [see perforated] * * * per·fo·ra·tion .pər fə rā shən n 1) the act or process of perforating specif the penetration of a body part through accident or disease <spontaneous … Medical dictionary
perforation — UK [ˌpɜː(r)fəˈreɪʃ(ə)n] / US [ˌpɜrfəˈreɪʃ(ə)n] noun Word forms perforation : singular perforation plural perforations 1) [countable] a small hole, usually one of a series of holes in a surface such as paper 2) a) [countable] medical a small hole… … English dictionary
perforation — per|fo|ra|tion [ ,pɜrfə reıʃn ] noun 1. ) count a small hole, usually one of a series of holes in a surface such as paper 2. ) count a small hole or cut in an organ or tube inside your body, caused by illness or injury a ) count or uncount the… … Usage of the words and phrases in modern English
perforation — n. the creation of a hole in an organ, tissue, or tube. This may occur in the course of a disease (e.g. a duodenal ulcer, colonic diverticulitis, or stomach cancer), allowing the contents of the intestine to enter the peritoneal cavity, which… … The new mediacal dictionary
History of abortion — The practice of abortion dates back to ancient times. Pregnancies were terminated through a number of methods, including the administration of abortifacient herbs, the use of sharpened implements, the application of abdominal pressure, and other… … Wikipedia
angiosperm — /an jee euh sperrm /, n. Bot. a plant having its seeds enclosed in an ovary; a flowering plant. Cf. gymnosperm. [ANGIO + SPERM] * * * ▪ plant Introduction any member of the more than 300,000 species of flowering plants (division Anthophyta) … Universalium
digestive system disease — Introduction any of the diseases that affect the human digestive tract. Such disorders may affect the esophagus, stomach, small intestine, large intestine (colon), pancreas, liver, or biliary tract. A prevalent disorder of the digestive… … Universalium
Tracheal intubation — Intervention Anesthesiologist using the Glidescope video laryngoscope to intubate the trachea of a morbidly obese elderly person with challenging airway anatomy … Wikipedia
