Jefferson

American  

[jef-er-suhn] / ˈdʒɛf ər sən /

noun

1. Joseph, 1829–1905, U.S. actor.

2. Thomas, 1743–1826, U.S. statesman, diplomat, architect, and author: 3rd president of the U.S. 1801–09.

3. a river in southwestern Montana, flowing generally northeast to join the Madison and Gallatin rivers to form the Missouri River. 225 miles (362 km) long.

4. Mount Jefferson, a mountain in northwestern Oregon, in the Cascade Range. 10,497 feet (3,199 meters).

5. Mount Jefferson, a mountain in northern New Hampshire, in the Presidential Range of the White Mountains. 5,715 feet (1,742 meters).

6. a male given name.

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Jefferson British  

/ ˌdʒɛfəˈsəʊnɪən, ˈdʒɛfəsən /

noun

1. Thomas. 1743–1826, US statesman: secretary of state (1790–93); third president (1801–09). He was the chief drafter of the Declaration of Independence (1776), the chief opponent of the centralizing policies of the Federalists under Hamilton, and effected the Louisiana Purchase (1803)

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Other Word Forms

• Jeffersonian
  adjective

Example Sentences

Jefferson believes the reason she stayed so long was because of the people she worked with, and so many of the lovely customers she got to speak to on a regular basis.

From BBC • May 31, 2026

When Jefferson first began working in the pharmacy in Portrush, County Antrim, it was known as JGW Boggs Medical Hall.

From BBC • May 31, 2026

A year ago he was second to De La Salle’s Jaden Jefferson in the 100 at the state finals, clocking 10.31.

From Los Angeles Times • May 30, 2026

It was designed for Jefferson by a Philadelphia cabinet maker and folds out to reveal a green baize writing top.

From Barron's • May 29, 2026

When John and Abigail Adams moved out in March 1801 and Thomas Jefferson moved in, Isaac did not go with President Jefferson.

From "In the Shadow of Liberty" by Kenneth C. Davis