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

Mr. Auslin recounts those debates and the drafting process of a document later described by its primary author, Thomas Jefferson, as “an expression of the American mind.”

From The Wall Street Journal • May 22, 2026

Appeared in the May 20, 2026, print edition as 'What Would Jefferson and Madison Make of Musk and Altman?'.

From The Wall Street Journal • May 19, 2026

Corona Centennial is also competing, which will mark the debut of Cathedral transfer Jaden Jefferson at quarterback.

From Los Angeles Times • May 16, 2026

They have been combing nearby bush and desert for Jefferson Lewis, who was released from prison six days before Kumanjayi Little Baby disappeared and vanished around the same time.

From BBC • Apr. 30, 2026

He wrote down Isaac’s memories of life with Jefferson.

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