rutherfordium Definition
ruther·for·dium (rut̸h′ər för′dē əm, rut̸h′-)
noun
a radioactive chemical element with a very short half-life: a transactinide produced by bombarding californium or plutonium with high-energy nuclear particles: symbol, Rf; at. no., 104
Etymology: ModL, after Ernest Ernest Rutherford + -ium

