SINOATRIAL NODE

Pronunciation (US):

(GB):

 I. (noun) 

Sense 1

Meaning:

A specialized bit of heart tissue that controls the heartbeat

Synonyms:

cardiac pacemaker; pacemaker; SA node; sinoatrial node

Classified under:

Nouns denoting body parts

Hypernyms ("sinoatrial node" is a kind of...):

cardiac muscle; heart muscle (the muscle tissue of the heart; adapted to continued rhythmic contraction)

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