Definitions

1. noun

A unit of mass in the metric system, equal to one-hundredth of a gram.

“The chemist carefully measured the sample using a dalton scale.”

2. proper noun

A surname of English origin.

“John Dalton was an English chemist and physicist.”

3. noun

A unit of mass in the International System of Units (SI), equal to one-thousandth of a gram.

“The physicist calculated the molecule’s mass in daltons.”

4. noun

A unit of mass, especially in molecular biology, equal to one atomic mass unit (amu).

“The geneticist analyzed the protein’s molecular weight in daltons.”