Jefferson

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biographical name

Jef·​fer·​son ˈje-fər-sən 

Thomas 1743–1826 vice president of the U.S. (1797–1801); 3rd president of the U.S. (1801–09)

Jeffersonian

ˌje-fər-ˈsō-nē-ən 

-nyən

adjective

Jefferson

2 of 2

geographical name

Jef·​fer·​son ˈje-fər-sən 

river over 200 miles (321 kilometers) long in southwestern Montana see three forks