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Search Result for "sa node":
Wordnet 3.0

NOUN (1)

1. a specialized bit of heart tissue that controls the heartbeat;
[syn: pacemaker, cardiac pacemaker, sinoatrial node, SA node]


WordNet (r) 3.0 (2006):

SA node n 1: a specialized bit of heart tissue that controls the heartbeat [syn: pacemaker, cardiac pacemaker, sinoatrial node, SA node]