Medical Definition of extrinsic
1: originating or due to causes or factors from or on the outside of a body, organ, or part <renal tumors or cysts…causing extrinsic compression of the renal vasculature—Scientific American Medicine>
2: originating outside a part and acting on the part as a whole—used especially of certain muscles <the extrinsic muscles of the tongue>; compare intrinsic 2
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