| auscultatory alternans | Alternation in the intensity of heart sounds or murmurs in the presence of a regular cardiac rhythm as a result of alternation of the heart. Synonym: auditory alternans. (05 Mar 2000) |
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| auscultatory gap | The period during which Korotkoff sounds indicating true systolic pressure fade away and reappear at a lower pressure point; responsible for errors made in recording falsely low systolic blood pressure, especially in hypertensive patients, of up to 25 mm Hg, and avoided by pumping the cuff 30 mm Hg beyond palpable systolic pressure. Synonym: silent gap. (05 Mar 2000) |
| auscultatory percussion | Auscultation of the chest or other part at the same time that percussion is made, to aid in hearing the sound made by percussion. (05 Mar 2000) |
| auscultatory sound | A rale, murmur, bruit, fremitus, or other sound heard on auscultation of the chest or abdomen. (05 Mar 2000) |
| auspicate | 1. To foreshow; to foretoken. 2. To give a favorable turn to in commencing; to inaugurate; a sense derived from the Roman practice of taking the auspicium, or inspection of birds, before undertaking any important business. "They auspicate all their proceedings." (Burke) Source: Websters Dictionary (01 Mar 1998) |
| aussage test | A test of ability to reproduce correctly something that has been seen for a brief interval. Origin: Ger. Aussage, a declaration (05 Mar 2000) |
| Austin Flint | <person> Flint, the son and grandson of physicians, was born in Massachusetts and graduated from Harvard Medical School in 1832. He founded the Buffalo Medical College. Austin became associated with Dr. Samuel D. Gross at the University of Louisville. He was a pioneer user and advocator of the binaural stethoscope, and was called the "American Laennec." This internist described a loud presystolic murmur at the cardiac apex in aortic regurgitation now known as the Austin Flint Murmur (1862). He introduced the terms "cavernous" and "broncho-vesicular respiration." His "Principles and Practice of Medicine" published in 1866 was a leading textbook of medicine for many years. Lived: 1812-1886. (18 Nov 1997) |
| Austin Flint murmur | Synonym: Austin Flint phenomenon, Flint's murmur. (05 Mar 2000) |
| Austin Flint phenomenon | The murmur of relative mitral stenosis during significant aortic regurgitation owing to narrowing of the mitral orifice by pressure of the aortic regurgitant flow on the anterior mitral leaflet. Synonym: Austin Flint murmur. (05 Mar 2000) |
| austral | Southern; lying or being in the south; as, austral land; austral ocean. <astronomy> Austral signs, the last six signs of the zodiac, or those south of the equator. Origin: L. Australis, fr. Auster: cf. F. Austral. Source: Websters Dictionary (01 Mar 1998) |
| Australia | The smallest continent and the only one existing as an independent country, comprising six states and one territory. Its capital is canberra. It was first sighted by the spanish in the early 17th century and at that time explored by the dutch who named it new holland. Stories dating from the 2d century a.d. Tell of a "terra australis incognita", unknown southern land. In the 19th century, the continent was circumnavigated by the english explorer matthew finders, who gave it its original name modified as terra australis (no longer "incognita"), shortened later to Australia. (12 Dec 1998) |
| Australia antigen | <virology> An envelope antigen now known as HBsAg of Hepatitis B virus. Appearance of the antigen in serum is associated with a phase of high infectivity. (18 Nov 1997) |
| Australian Q fever | A variety of Q fever occurring in Australia; an acute infectious rickettsial infection caused by Coxiella burnetii and transmitted by ticks, enzootic in animals in Australia, especially bandicoots. (05 Mar 2000) |
| Australian X disease | A severe encephalitis with a high mortality rate occurring in the Murray Valley of Australia; the disease is most severe in children and is characterised by headache, fever, malaise, drowsiness or convulsions, and rigidity of the neck; extensive brain damage may result; it is caused by the Murray Valley encephalitis virus (genus Flavivirus). Synonym: Australian X disease, Australian X encephalitis. (05 Mar 2000) |
| Australian X disease virus | A group B arbovirus of the genus Flavivirus that causes Murray Valley encephalitis; it is transmitted by Culex mosquitoes, and also infects birds and horses. Synonym: Australian X disease virus, MVE virus. (05 Mar 2000) |
| autogenic |
autogenous: originating within the body
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| auditory system |
the sensory system for hearing
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| autoimmune |
of or relating to the immune response of the body against substance normally present in the body
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| audition |
hearing: the ability to hear; the auditory faculty; "his hearing was impaired" a test of the suitability of a performer perform in order to get a role; "She auditioned for a role on Broadway"
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| autolytic |
of or relating to self-digestion
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| AU | relating to or characterized by an aura |
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| AU | of or pertaining to hearing or the ear |
| AU | with regard to sound or the ear |
| AU | 100 aurar equal 1 krona |
| AU | having the deep slightly brownish color of gold |
| AU | elaborately or excessively ornamented |
| AU | Emperor of Rome |
| AU | small genus of North American herbs often root-parasitic and bearing golden-yellow flowers |
| AU | multi-stemmed North American annual having solitary axillary dark golden-yellow flowers resembling those of the foxglove |
| AU | sparsely branched North American perennial with terminal racemes of bright yellow flowers resembling those of the foxglove |
| AU | an indication of radiant light drawn around the head of a saint |
| AU | the outermost region of the sun's atmosphere |