of or relating to the atria and ventricles of the heart.
Abbreviation: AV, A-V.
adjective (anatomy)
of, relating to, or affecting both the atria and the ventricles of the heart: atrioventricular disease

atrioventricular a·tri·o·ven·tric·u·lar (ā’trē-ō-věn-trĭk’yə-lər)
Abbr. A-V
Of or relating to the atria and the ventricles of the heart.


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  • Atrioventricular block

    atrioventricular block atrioventricular block n. Impairment of the normal conduction of impulses between the atria and the ventricles.

  • Atrioventricular bundle

    a bundle of specialized muscle fibers regulating the heartbeat by conducting impulses from the right atrium to the ventricles. atrioventricular bundle n. See atrioventricular trunk.

  • Atrioventricular canal

    atrioventricular canal atrioventricular canal n. The canal in the embryonic heart joining the atrium to the ventricle.

  • Atrioventricular canal cushion

    atrioventricular canal cushion atrioventricular canal cushion n. Either of a pair of mounds of embryonic connective tissue covered by endothelium, bulging dorsally and ventrally into the embryonic atrioventricular canal, eventually growing together and dividing the canal into right and left atria. Also called endocardial cushion.

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