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atrium
a·tri·um / ˈātrēəm/ • n. (pl. a·tri·a / ˈātrēə/ or a·tri·ums) 1. Archit. an open-roofed entrance hall or central court in an ancient Roman house. ∎ a central hall or court in a modern building, with rooms or galleries opening off it, often glass-covered. 2. Anat. each of the two upper cavities of the heart from which blood is passed to the ventricles. The right atrium receives deoxygenated blood from the veins of the body; the left atrium receives oxygenated blood from the pulmonary vein. Also called auricle. DERIVATIVES: a·tri·al / ˈātrēəl/ adj. |
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"atrium." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "atrium." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O999-atrium.html "atrium." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-atrium.html |
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atrium
atrium
1. (or auricle) A chamber of the heart that receives blood from the veins and forces it by powerful muscular contraction into the ventricle(s). Fish have a single atrium but all other vertebrates have two. 2. Any of various cavities or chambers in animals, such as the chamber surrounding the gill slits of the lancelet and other invertebrate chordates. |
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"atrium." A Dictionary of Biology. 2004. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "atrium." A Dictionary of Biology. 2004. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O6-atrium.html "atrium." A Dictionary of Biology. 2004. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-atrium.html |
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atrium
atrium (ay-tri-ŭm) n. (pl. atria)
1. either of the two upper chambers of the heart. The left atrium receives arterial blood from the lungs via the pulmonary artery; the right atrium receives venous blood from the venae cavae. See also auricle. 2. any of various anatomical chambers into which one or more cavities open. —atrial adj. |
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"atrium." A Dictionary of Nursing. 2008. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "atrium." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O62-atrium.html "atrium." A Dictionary of Nursing. 2008. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-atrium.html |
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atrium
atrium
1. In Urochordata and Cephalochordata, a chamber surrounding the pharyngeal region which receives water from the pharyngeal clefts and opens to the exterior through an atrial opening (sometimes called an atriopore). 2. See AURICLE. |
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MICHAEL ALLABY. "atrium." A Dictionary of Zoology. 1999. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "atrium." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O8-atrium.html MICHAEL ALLABY. "atrium." A Dictionary of Zoology. 1999. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-atrium.html |
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atrium
atrium. The main court in a Roman house. The word is also used of the forecourt attached to early Christian churches; it usually consisted of a colonnaded quadrangle with a fountain in the middle.
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E. A. LIVINGSTONE. "atrium." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. E. A. LIVINGSTONE. "atrium." The Concise Oxford Dictionary of the Christian Church. 2000. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O95-atrium.html E. A. LIVINGSTONE. "atrium." The Concise Oxford Dictionary of the Christian Church. 2000. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O95-atrium.html |
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atrium
atrium central court of Roman house XVII; (anat.) chamber of an organ of the body XIX. — L. ātrium.
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T. F. HOAD. "atrium." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. T. F. HOAD. "atrium." The Concise Oxford Dictionary of English Etymology. 1996. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O27-atrium.html T. F. HOAD. "atrium." The Concise Oxford Dictionary of English Etymology. 1996. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O27-atrium.html |
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atrium
atrium
•columbium
•erbium, terbium, ytterbium
•scandium • compendium
•palladium, radium, stadium, vanadium
•medium, tedium
•cryptosporidium, cymbidium, idiom, iridium, rubidium
•indium
•exordium, Gordium, rutherfordium
•odeum, odium, plasmodium, podium, sodium
•allium, gallium, pallium, thallium, valium
•berkelium, epithelium, helium, nobelium, Sealyham
•beryllium, cilium, psyllium, trillium
•linoleum, petroleum
•thulium • cadmium
•epithalamium, prothalamium
•gelsemium, premium
•chromium, encomium
•holmium • fermium
•biennium, millennium
•cranium, geranium, germanium, Herculaneum, titanium, uranium
•helenium, proscenium, rhenium, ruthenium, selenium
•actinium, aluminium, condominium, delphinium
•ammonium, euphonium, harmonium, pandemonium, pelargonium, plutonium, polonium, zirconium
•neptunium
•europium, opium
•aquarium, armamentarium, barium, caldarium, cinerarium, columbarium, dolphinarium, frigidarium, herbarium, honorarium, planetarium, rosarium, sanitarium, solarium, sudarium, tepidarium, terrarium, vivarium
•atrium
•delirium, Miriam
•equilibrium, Librium
•yttrium
•auditorium, ciborium, conservatorium, crematorium, emporium, moratorium, sanatorium, scriptorium, sudatorium, vomitorium
•opprobrium
•cerium, imperium, magisterium
•curium, tellurium
•potassium • axiom • calcium
•francium • lawrencium • americium
•Latium, solatium
•lutetium, technetium
•Byzantium • strontium • consortium
•protium • promethium • lithium
•alluvium, effluvium
•requiem • colloquium • gymnasium
•caesium (US cesium), magnesium, trapezium
•Elysium • symposium
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"atrium." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "atrium." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O233-atrium.html "atrium." Oxford Dictionary of Rhymes. 2007. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-atrium.html |
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