noun
definition
The final (bottom-most) fused vertebrae at the base of the spine, the tailbone.
Examples of coccyx in a Sentence
Caudal vertebrae fused into a urostyle or coccyx.
Margaret UK 01/02/2005 Unfortunately, i cannot sit comfortably on hard plastic seats - broken coccyx.
Other problems coccyx pain Use a chair with a coccyx cut-out wedge, or a chair with a coccyx cut-out option.
But what are we to say about the rudimentary and variable vertebrae of the terminal portion of the tail, forming the os coccyx?
But his bona fide coccyx moment came a little later on, although he remained stoical in his agony.
By the end of the fifth week, the embryo has doubled in size and has grown a tail-like structure that becomes the coccyx (lowermost tip of the backbone).
In accordance with the saltatorial habits of the members of this order, the vertebrae, which number from 40 to 60 in the Caudata, to upwards of in the Apoda, have become reduced to Io as the normal number, viz., eight praecaudal, one sacral and an elongate coccyx or urostyle, formed by coalescence of at least two vertebrae.
The coccyx and the sacro-sciatic ligaments, together with the muscles attached to them, have been removed.
In some genera this coccyx is fused with the ninth vertebra, and contributes to the FIG.