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si·no·ventricular | \ ¦sī(ˌ)nō+ \
variants:
or less commonly sinuventricular \ ¦sī(ˌ)n(y)ü+ \
Definition of sinoventricular
1 : of or relating to the sinus venosus and the ventricles of the heart
2 : of, involving, or being the sinoventricular system
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