rutherfordium(n = noun.substance) atomic number 104, element 104, rf, unnilquadium, unq - a radioactive transuranic element which has been synthesized;
is a kind of chemical element, element
rutherfordium, n. Chem. an artificially made transuranic metallic element produced by bombarding an isotope of Californium.
Usage:
Symb.: Rf. Also called KURCHATOVIUM.
Etymology:
E. Rutherford, Engl. physicist d. 1937