Dictionary
sinus node
noun
Definition of SINUS NODE
: a small mass of tissue that is embedded in the musculature of the right atrium of higher vertebrates and that originates the impulses stimulating the heartbeat
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First Known Use of SINUS NODE
1937
Rhymes with SINUS NODE
Medical Dictionary
sinus node
noun
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Next Word in the Dictionary: sinusoidPrevious Word in the Dictionary: sinusitisAll Words Near: sinus node
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