from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The specialized striated muscle tissue of the heart; the myocardium.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The striated and involuntary muscle of the vertebrate heart.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the muscle tissue of the heart; adapted to continued rhythmic contraction
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