hypostyle hall in architecture, interior space whose roof rests on pillars or columns. The word means literally ... [6 Related Articles]
hyposulfite of soda (from the article "hyposulfite of soda") most important salt of thiosulfuric acid, an unstable compound of sulfur (q.v. ).for more general content ...
hypotension condition in which the blood pressure is abnormally low, either because of reduced blood volume ... [2 Related Articles]
hypotensive drug (from the article "drug") ...by reducing the cardiac output, and prazosin, which blocks the vasoconstrictor action of norepinephrine); calcium ...
hypothalamic releasing hormone (from the article "hormone") ...perhaps entirely, in the hypothalamic region there. Much remains to be learned about this system, ...
hypothalamic-hypophyseal portal circulation (from the article "endocrine system, human") Two portal circulations in which hormones are transported are present in the human body. One ...
hypothalamic-pituitary-target organ axis (from the article "endocrine system") The hypothalamic-pituitary-target organ axes of all vertebrates are similar. The hypothalamic neurosecretory system is poorly ...
hypothalamus region of the brain lying below the thalamus and making up the floor of the ... [31 Related Articles]
hypothallus (from the article "fungus") ...that it usually cannot be removed intact. Some crustose lichens grow beneath the surface of ...
hypothec in Roman law, a type of security for a debt in which the creditor had ... [1 Related Articles]
hypothermia abnormally low body temperature in a warm-blooded creature, associated with a general slowing of physiologic ... [2 Related Articles]
hypothesis (from the article "logic") ...second area is model theory, which investigates the various structures about which formal theories can ...
hypothesis testing (from the article "statistics") Hypothesis testing is a form of statistical inference that uses data from a sample to ...
hypothetical imperative (from the article "categorical imperative") ...or absolute for all agents, the validity or claim of which does not depend on ...
hypothetical proposition (from the article "applied logic") Other truth functional connectives are easily constructed using combinations of these gates. For example, the ...
hypothetical syllogism (from the article "logic, history of") Theophrastus is also credited with investigations into hypothetical syllogisms. A hypothetical proposition, for Theophrastus, is ...
hypothetico-deductive method procedure for the construction of a scientific theory that will account for results obtained through ... [3 Related Articles]
hypothyroidism a deficiency in hormone production by the thyroid gland. [7 Related Articles]
hypotrich any dorsoventrally flattened, oval protozoan of the ciliate order Hypotrichida, very widely distributed in both ...
hypoventilation syndrome (from the article "respiration, human") ...in oxygen and carbon dioxide transport, impaired oxygen exchange is far more common than impaired ...
hypovolemic shock (from the article "diagnosis") Shock occurs when blood pressure falls to extremely low levels. The underlying cause of this ...
hypoxanthine-guanine phosphoribosyltransferase (from the article "metabolic disease") ...may be curative, and gene therapy has shown promise, but enzyme replacement therapy is the ...
hypoxemia (from the article "blood disease") ...altitudes is a direct result of the diminished oxygen pressure in the environment. Chronic pulmonary ...
hypoxia condition of the body in which the tissues are starved of oxygen. In its extreme ... [6 Related Articles]
Hypsilophodon small to medium-sized herbivorous dinosaurs that flourished about 115 million to 110 million years ago ... [1 Related Articles]
Hypsilophodontidae (from the article "ornithopod") ...to 65 million years ago) and were one of the most successful and enduring dinosaur ...
Hypsipyle in Greek legend, daughter of Dionysus's son Thoas, king of the island of Lemnos. When ...
hypsodont tooth (from the article "perissodactyl") Associated with these changes in the tooth surfaces is a tendency for the crown to ...
hypsographic tinting (from the article "map") ...Hill shading requires considerable artistry, as well as the ability to visualize shapes and interpret ...
hypsometric curve cumulative height frequency curve for the Earth's surface or some part thereof. A hypsometric curve ... [1 Related Articles]
hypsometry (from the article "ocean") ...sparse depth measurements accumulated by individual wire soundings, while the more recent work had the ...
hyracodont (from the article "perissodactyl") The amynodonts are known from the late Eocene and Oligocene of Eurasia and America and ...
hyrax any of six species of small hoofed mammals (ungulates) native to Africa and extreme southwestern ... [3 Related Articles]
Hyrcania ("Wolf's Land"), ancient region located southeast of the Caspian Sea. Its capital was Zadracarta (Astrabad, ... [1 Related Articles]
Hysing, Hans (from the article "Ramsay, Allan") The son of the poet and literary antiquary Allan Ramsay, he received rudimentary artistic training ...
Hyspaosines (from the article "Mesene") ancient Parthian vassal state located in the south of Babylonia (modern southern Iraq). After the ...
hyssop (Hyssopus officinalis ), garden herb of the mint family (Lamiaceae, or Labiatae) whose flowers and evergreen ... [1 Related Articles]
Hystaspes son of Arsames, king of Parsa, and father of the Achaemenid king Darius I of ... [2 Related Articles]
Hystaspes protector and follower of the Iranian prophet Zoroaster. Son of Aurvataspa (Lohrasp) of the Naotara ... [1 Related Articles]
Hysterangiales (from the article "fungus") ...may be olive-shaped, usually rough; included in subclass Phallomycetidae; example genera include Gomphus , Gautieria , and ...
hysterectomy surgical removal of the complete uterus (total hysterectomy) or of the complete uterus except for ... [4 Related Articles]
hysteresis lagging of the magnetization of a ferromagnetic material, such as iron, behind variations of the ... [6 Related Articles]
hysteresis damping (from the article "damping") Besides these external kinds of damping, there is energy loss within the moving structure itself ...
hysteresis loop (from the article "magnetism") ...positive saturation value. Further cycles of H retrace the broken curve, which is known as ...
hysteresis loss (from the article "hysteresis") ...cycle may be continued so that the graph of the flux density lagging behind the ...
hysteresis motor (from the article "electric motor") A distinctive feature of synchronous motors is that the speed is uniquely related to the ...
Hysteriales (from the article "fungus") ...and endophytic in plants; ascospores are forcibly discharged; example genera include Botryosphaeria and Guignardia . Order Hysteriales ...
hysterical amnesia (from the article "memory abnormality") Hysterical amnesia is of two main types. One involves the failure to recall particular past ...
hysterosalpingography (from the article "infertility") ...tract; PID often follows infection with an STD, such as gonorrhea or chlamydia. The traditional ...
hysterotomy (from the article "abortion") ...contractions; alternatively, the administration of prostaglandins by injection, suppository, or other method may be used ...
Hystricognatha (from the article "rodent") ...species in 1 genus, 8 extinct genera. Late Eocene to present in North America, Oligocene ...
Hythe town (parish), Shepway district, administrative and historic county of Kent, England, on the English Channel ... [1 Related Articles]
Hytner, Nicholas When Stuff Happens -David Hare's dissection of the Second Persian Gulf War, with U.S. Pres. George ... [4 Related Articles]
Hyundai Group major diversified corporation in South Korea. The international company supplies a product line that ranges ... [2 Related Articles]
hyung (from the article "tae kwon do") ...do is carried out by learning individual techniques of kicking, punching, and blocking, which are ...
Hyvinkaa city, southern Finland, north of Helsinki. It is the centre of Finland's woollen industry, and ...
Hywel ab Owain Gwynedd Welsh warrior-prince and poet who was the first to develop the courtly love lyric in ... [1 Related Articles]
Hywel Dda chieftain called in the prologues to the Welsh lawbooks "king of all Wales." This epithet ... [3 Related Articles]
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