WordNet (r) 3.0 (2006):

rutherford
    n 1: a unit strength of a radioactive source equal to one
         million disintegrations per second
    2: British chemist who isolated nitrogen (1749-1819) [syn:
       Rutherford, Daniel Rutherford]
    3: British physicist (born in New Zealand) who discovered the
       atomic nucleus and proposed a nuclear model of the atom
       (1871-1937) [syn: Rutherford, Ernest Rutherford, First
       Baron Rutherford, First Baron Rutherford of Nelson]