actinium series
noun Chemistry.
the radioactive series that starts with uranium 235 and ends with a stable isotope of lead of mass number 207.
Origin of actinium series
First recorded in 1955–60
Words nearby actinium series
actinide series,
actiniform,
actinin,
actinism,
actinium,
actinium series,
actino-,
actinobacillosis,
actinobacillus,
actinobiology,
actinochemistry
British Dictionary definitions for actinium series
actinium series
noun
a radioactive decay series that starts with uranium-235 and ends with lead-207