Yttrium – /i-tree-uhm/ named after the village of Ytterby in Sweden, chemical element symbol Y (lat. Yttirium), atomic number 39, atomic mass 88.9059, silver color, white metal, used to make heat-resistant items. used in cleaning alloys.
Ex. Yttrium, often incorporated into phosphors for LED lighting, enhances the color rendering and efficiency of these energy-efficient light sources.