Atrium

An atrium is a square hall lighted from above, into which rooms open at one or more levels. Originally, the entrance hall to a Roman house, the concept was adopted as an open court with a porch or gallery around three or more sides at the entrance of a basilica or other church. The name was extended in the Middle Ages to the open churchyard or ceme
Found on http://www.probertencyclopaedia.com/browse/TA.HTM

atrium

Type: Term Pronunciation: ā′trē-ŭm, ā′trē-ă Definitions: 1. A chamber or cavity to which are connected several chambers or passageways. 2. That part of the tympanic cavity that lies immediately deep to the tympanic membrane. 3. In the lung, a subdivision of the alveolar duct from which alveolar sacs open. S
Found on http://www.medilexicon.com/medicaldictionary.php?t=8386

atrium

An open courtyard at the entrance of a church, usually surrounded by covered aisles. The atrium of the Early Christian church was originally a place for the catechumens to wait during the celebration of the Eucharist.
Found on http://www.pitt.edu/~medart/menuglossary/INDEX.HTM

Atrium

(Latin) in a Roman domus (house), the atrium was the central hall that followed the fauces, the jaws or entryway of the house, and opened into the tablinum, the reception area where guests were greeted.
Found on http://ablemedia.com/ctcweb/glossary/glossaryi.html

Atrium

A structure that provides lots of above light for plants. Commercial buildings often have their foyer as an atrium. Many homes have built in atriums.
Found on http://www.emilycompost.com/garden_glossary.htm

atrium

[n] - any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart) 2. [n] - the central area in a building
Found on http://www.webdictionary.co.uk/definition.php?query=atrium

Atrium

The right atrium is the upper right chamber of the heart, where blood from the body enters before flowing to the right ventricle. Similarly the left atrium is the upper left chamber, where oxygenated blood from the lungs enters and then flows to the left ventricle and thus to the rest of the body. Atria is the plural.
Found on http://www.bcpa.co.uk/glossary.htm

atrium

In architecture, an open inner courtyard. An atrium was originally the central court or main room of an ancient Roman house, open to the sky, often with a shallow pool to catch rainwater. ...
Found on http://www.encyclo.co.uk/local/20688

Atrium

A large, glazed area in an office building designed to let light into the lower floors (small ones formerly known as light wells!). 
Found on http://www.encyclo.co.uk/local/20698

atrium

The hallway or quadrangular courtyard inside the front part of a Roman house. It was usually a pillared courtyard, with a central area, that was open to the sky, where the climate permitted. Visitors coming in from the street would pass through an entrance passage into this central circulating space. The atrium was the working heart of the home, wh
Found on http://www.encyclo.co.uk/visitor-contributions.php

Atrium

An upper smaller heart chamber
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Atrium

The two upper chambers of the heart
Found on http://www.dwp.gov.uk/medical/med_conditions/glossary.html

Atrium

A cavity into which one or more other cavities open.
Found on http://www.gadsbywicks.co.uk/uploaded/3822.pdf

Atrium

Atrium: One of the two smaller chambers of the heart. Each atrium consists of an open space with recessed walls. The plural of atrium is atria. The right atrium receives deoxygenated blood from the body through the vena cava and pumps it down into the right ventricle which then sends it to the lungs. The left atrium receives oxygenated blood from t
Found on http://www.medterms.com/script/main/art.asp?articlekey=2388

Atrium

in Roman domestic architecture, an inner court open to the sky and surrounded by the roof, now often used as a general term to describe large glazed sections in buildings.
Found on http://www.encyclo.co.uk/local/20935

atrium

(= atria (plural)) A cavity in the body, especially either of the two upper chambers of the heart in higher vertebrates.
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Atrium

A'tri·um noun ; plural Atria [ Latin , the fore court of a Roman house.] 1. (Architecture) (a) A square hall lighted from above, into which rooms open at one or more levels. (b) An open court with a porch or gallery around three or more sides; especi
Found on http://www.encyclo.co.uk/webster/A/140

Atrium

A'tri·um noun (Anat.) A cavity, entrance, or passage; as, the atrium , or atrial cavity, in the body wall of the amphioxus; an atrium of the infundibula of the lungs, etc.
Found on http://www.encyclo.co.uk/webster/A/141

atrium

<anatomy> A chamber, used in anatomical nomenclature to designate a chamber affording entrance to another structure or organ. Usually used alone to designate an atrium of the heart. ... Origin: L., Gr. Atrion = hall ... (16 Dec 1997) ...
Found on http://www.mondofacto.com/facts/dictionary?atrium

atrium

noun any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
Found on http://wordnetweb.princeton.edu/perl/webwn?s=atrium

atrium

noun the central area in a building; open to the sky
Found on http://wordnetweb.princeton.edu/perl/webwn?s=atrium

atrium

(a´tre-әm) pl. a´tria a chamber affording entrance, especially one of the upper chambers on either side of the heart, which receive blood from the body and transmit it to the ventricles. Atria of the heart. left atrium the upper chamber of...
Found on http://www.encyclo.co.uk/local/21001

Atrium

• (n.) A square hall lighted from above, into which rooms open at one or more levels. • (n.) The main part of either auricle of the heart as distinct from the auricular appendix. Also, the whole articular portion of the heart. • (n.) An open court with a porch or gallery around three or more sides; especially at the entrance of a bas
Found on http://thinkexist.com/dictionary/meaning/atrium/

atrium

in architecture, originally an open central court of a Roman house and later of a Christian basilica. In domestic and commercial architecture the ... [4 related articles]
Found on http://www.britannica.com/eb/a-z/a/121

atrium

in vertebrates and the higher invertebrates, heart chamber that receives blood into the heart and drives it into a ventricle, or chamber, for ... [13 related articles]
Found on http://www.britannica.com/eb/a-z/a/121
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