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Noun: thorium-228
  1. Radioactive isotope of thorium with mass number 228
    - radiothorium

Type of: atomic number 90, Th, thorium

Encyclopedia: Thorium-228

Nearest

thoracotomy
thorax
Thorazine
Thoreau
Thoreauvian
thoria
thoriate
thoriated
thorite
thorium
thorium-228
thorn
thorn apple
thornback
thornbill
Thorndike
thorniness
thornless
thorn-tipped
Thornton
Thornton Niven Wilder