thorium series
noun Chemistry.
the radioactive series that starts with thorium and ends with a stable isotope of lead of mass number 208.
Words nearby thorium series
thoria,
thorianite,
thorite,
thorium,
thorium dioxide,
thorium series,
thorn,
thorn apple,
thorn in one's flesh,
thorn moth,
thornback
British Dictionary definitions for thorium series
thorium series
noun
a radioactive series that starts with thorium-232 and ends with lead-208