ATRIUM

Pronunciation (US): (GB):

Irregular inflected form: atria

I. (noun)

Sense 1

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)

Sense 2

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))

Credits

Context examples:

Abnormality of the P wave signifies aberrant propagation of the electrical impulse through the atria.

(P Wave Abnormality by ECG Finding, NCI Thesaurus)

An electrocardiographic finding suggesting underlying hypertrophy or dilatation of the left atrium.

(P-mitrale by ECG Finding, NCI Thesaurus)

An electrocardiographic finding suggesting underlying hypertrophy or dilatation of the right atrium.

(P-pulmonale by ECG Finding, NCI Thesaurus)

A congenital heart disorder in which one or two pulmonary veins are not connected to the left atrium and drain into the right atrium instead.

(Partial Anomalous Pulmonary Venous Return, NCI Thesaurus)

The initial portion of the P wave is largely a reflection of right atrial depolarization and the terminal portion reflects depolarization of the left atrium.

(P Wave, NCI Thesaurus)

The hole in the left atrium of the heart where the pulmonary vein enters.

(Opening of the Pulmonary Vein, NCI Thesaurus)

The valve between the left atrium and left ventricle of the heart.

(Mitral Valve, NLM, Medical Subject Headings)

A congenital defect where the valve (mitral) which connects the two chambers on the left side of the heart (atrium and ventricle) is closed off.

(Mitral Valve Atresia, NICHD)

A fairly common and often benign valvular heart disorder characterized by redundancy or hooding of mitral valve leaflets so that they prolapse into the left atrium, often causing mitral regurgitation.

(Mitral Valve Prolapse, NCI Thesaurus)

A invasive therapeutic procedure to destroy the tissue in the cardiac atria that is the source of an arrhythmia.