Definition of "Thomson" :

noun: English physicist who experimented with the conduction of electricity through gases and who discovered the electron and determined its charge and mass (1856-1940)

noun: English physicist (son of Joseph John Thomson) who was a co-discoverer of the diffraction of electrons by crystals (1892-1975)

noun: United States electrical engineer (born in England) who in 1892 formed a company with Thomas Edison (1853-1937)

noun: United States composer who collaborated with Gertrude Stein (1896-1989)