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true knot

true knot in Medicine

true knot n.
An intertwining of a segment of umbilical cord, usually without obstructing circulation, commonly formed by the fetus slipping through a loop of the cord.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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