Definitions

1. noun

A type of medieval balancing scale or a device consisting of two beams or arms that balance against each other.

“The museum exhibit included a rare example of a 15th-century triquetrum, showcasing ancient weighing techniques.”

2. noun

A trivalent radionuclide with the symbol Cm-248 and atomic number 98.

“The nuclear physicist studied the properties of triquetrum, a highly unstable element.”