actinide series(n = noun.substance) - (chemistry) a series of 15 radioactive elements with increasing atomic numbers from actinium to lawrencium;
is a kind of series

actinide, alkane series, electrochemical series, electromotive force series, electromotive series, exponential series, fourier series, geometric series, gi series, in series, lanthanide series, methane series, ordered series, paraffin series, power series, series, series circuit, series dynamo, series motor, series turns, series winding, time series, world series