Triquetrum may refer to:
*
triquetrum (astronomy), an ancient astronomical instrument
* The
triquetral bone
The triquetral bone (; also called triquetrum, pyramidal, three-faced, and formerly cuneiform bone) is located in the wrist on the medial side of the proximal row of the carpus between the lunate and pisiform bones. It is on the ulnar side of th ...
in the human wrist
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