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rutherford
noun
a unit for measuring radioactive decay, equal to the mass (of a given substance) required to give off one million disintegrations per second; one million becquerels: symbol, rd
- Rutherford, Ernest Baron Rutherford of Nelson 1871-1937; Brit. physicist, born in New Zealand
- Rutherford, Joseph Franklin 1869-1942; U.S. leader of Jehovah's Witnesses
See rutherford in American Heritage Dictionary 4
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