WordNet (r) 3.0 (2006):

Thomson
    n 1: United States composer who collaborated with Gertrude Stein
         (1896-1989) [syn: Thomson, Virgil Thomson, Virgil
         Garnett Thomson]
    2: United States electrical engineer (born in England) who in
       1892 formed a company with Thomas Edison (1853-1937) [syn:
       Thomson, Elihu Thomson]
    3: English physicist (son of Joseph John Thomson) who was a co-
       discoverer of the diffraction of electrons by crystals
       (1892-1975) [syn: Thomson, George Paget Thomson, Sir
       George Paget Thomson]
    4: English physicist who experimented with the conduction of
       electricity through gases and who discovered the electron and
       determined its charge and mass (1856-1940) [syn: Thomson,
       Joseph John Thomson, Sir Joseph John Thomson]