ATRIUM (atria)

Pronunciation (US):

(GB):

IPA (US):

Irregular inflected form: atria   

 Dictionary entry overview: What does atrium mean? 

• ATRIUM (noun)
  The noun ATRIUM has 2 senses:

1. any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)

2. the central area in a building; open to the sky

  Familiarity information: ATRIUM used as a noun is rare.

 Dictionary entry details 

• ATRIUM (noun)

Sense 1

Meaning:

Any chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)

Classified under:

Nouns denoting body parts

Hypernyms ("atrium" is a kind of...):

chamber (an enclosed volume in the body)

Hyponyms (each of the following is a kind of "atrium"):

atrium cordis; atrium of the heart (the upper chamber of each half of the heart)

Derivation:

atrial (of or relating to a cavity or chamber in the body (especially one of the upper chambers of the heart))

Sense 2

Meaning:

The central area in a building; open to the sky

Classified under:

Nouns denoting man-made objects

Hypernyms ("atrium" is a kind of...):

court; courtyard (an area wholly or partly surrounded by walls or buildings)

 Context examples 

The right or left atrium is divided into two parts by fibromuscular tissue or a membrane.

(Cor Triatriatum, NCI Thesaurus)

The coronary vein that terminates in the right atrium and transports deoxygenated blood from the coronary circulation.

(Coronary Sinus, NCI Thesaurus)

A blood vessel in the heart which returns coronary blood to the right atrium.

(Coronary Vein, NCI Thesaurus)

Dilation of the valve between the left atrium and the left ventricle of the heart by inflating a balloon.

(Mitral Balloon Valvotomy, NCI Thesaurus/ACC)

A congenital disorder characterized by the presence of an abnormal communication between the atria or the ventricles of the heart due to defects in the cardiac septum.

(Congenital Septal Defect, NCI Thesaurus)

Instead of intermittently contracting, the atria quiver continuously in a chaotic pattern, causing a totally irregular, often tachycardia ventricular rate.

(Chronic Atrial Fibrillation, NCI Thesaurus)

An artery arising from the bifurcation of the left coronary artery that runs along the coronary grove with branches supplying the atria and ventricles.

(Circumflex Branch of the Left Coronary Artery, NCI Thesaurus)

Aberrant drainage of one or more of the pulmonary veins which causes the return of oxygen-rich blood to the right atrium.

(Congenital Anomaly of Pulmonary Veins, NCI Thesaurus)

Dilation of the valve between the left atrium and the left ventricle of the heart by use of a surgeon's finger or rigid instrument.

(Mitral Commissurotomy, NCI Thesaurus/ACC)

A dual-flap valve of the heart that regulates the flow of blood between the left atrium and the left ventricle of the heart.

(Mitral Valve, NCI Thesaurus)