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Medical Term:


Pronunciation: kok'siks, -si-jis, -si-jes


The small bone at the end of the vertebral column in humans, formed by the fusion of four rudimentary vertebrae; it articulates above with the sacrum.

Synonym(s): os coccygisTA, coccygeal bone, tail bone

[G. kokkyx, a cuckoo, the coccyx]

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.