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• dalton
  dalton

  noun

  atomic mass unit.
• Dalton
  Dalton

  noun

  John, 1766–1844, English chemist and physicist.

dalton

¹ American  

[dawl-tn] / ˈdɔl tn /

noun

Physics.

1. atomic mass unit.

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Dalton ² American  

[dawl-tn] / ˈdɔl tn /

noun

1. John, 1766–1844, English chemist and physicist.

2. Robert, 1867–92, U.S. outlaw in the West.

3. a city in NW Georgia.

4. a male given name.

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Dalton ¹ British  

/ ˈdɔːltən /

noun

1. John. 1766–1844, English chemist and physicist, who formulated the modern form of the atomic theory and the law of partial pressures for gases. He also gave the first accurate description of colour blindness, from which he suffered

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dalton ² British  

/ ˈdɔːltən /

noun

1. another name for atomic mass unit

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Dalton ¹ Scientific  

1. British chemist whose pioneering work on the properties of the atmosphere and gases led him to formulate the atomic theory. Dalton's theory stipulates that all matter is made up of combinations of atoms, the atoms of each element being identical. These atoms can be neither created nor destroyed, but chemical reactions take place through their rearrangement.

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dalton ² Scientific  

/ dôl′tən /

1. See atomic mass unit

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Etymology

Origin of dalton

First recorded in 1935–40; named after J. Dalton

Example Sentences

See Examples For:

Dalton

The blaze at Dalton Mills in Keighley started at about 20:00 BST on Saturday and at its peak required 12 fire engines to tackle it.

From BBC ● Sep. 13, 2026

"These are thick blocks of ice that can drift for years," specifies Dr. Abigail Dalton of the Canadian Ice Service, Environment and Climate Change Canada.

From Science Daily ● Aug. 26, 2026

Words were exchanged between unarmed Joshua Fox and armed Dalton Eatherly.

From Slate ● Aug. 20, 2026

Both Will Smith and Dalton Rushing are hitting on the field pregame.

From Los Angeles Times ● Aug. 15, 2026

“The police were already here this morning,” said Mr. Dalton.

From "The Lions of Little Rock" by Kristin Levine