Medical Dictionary
node
noun \ˈnōd\
Medical Definition of NODE
1
a : a pathological swelling or enlargement (as of a rheumatic joint) b : a body part resembling a knot; especially : a discrete mass of one kind of tissue enclosed in tissue of a different kind—see atrioventricular node, lymph node
2
: a point, line, or surface of a vibrating body that is free or relatively free of vibratory motion
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