thorium

  1. Noun, Chemistry toryum
  2. Noun toryum, gri-beyaz renkli, parlak radyoaktif maden. Simge:
    Th, atom. ağ.: 232.038, özg. ağ.: 11.2.
Uranyum ve toryum cevherleri madenciliği (NACE kodu: 07.21) Noun, Trades-Professions
toryum serisi Noun, Physics