Triquetrum
Encyclopedia
Triquetrum may refer to:
- triquetrum (astronomy)Triquetrum (astronomy)The triquetrum was the medieval name for an ancient astronomical instrument first described by Ptolemy in the Almagest . Also known as Parallactic Rulers, it was used for determining altitudes of heavenly bodies...
, an ancient astronomical instrument - The triquetral boneTriquetral boneThe triquetral 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 the hand, but does not articulate with the ulna...
in the human wrist