[ trī-brā′kē-ə ]
A condition seen in conjoined twins when the fusion has merged the adjacent arms to form a single one, so that there are only three arms for the two bodies.
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Words nearby tribrachia
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.