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
Origin of rutherfordafter Ernest Rutherford
- Baron Rutherford of Nelson 1871-1937; Brit. physicist, born in New Zealand
- 1869-1942; U.S. leader of Jehovah's Witnesses
A unit expressing the rate of decay of radioactive material, equal to one million disintegrations per second, or one million becquerels.
Origin of rutherfordAfterErnest Rutherford
After Ernest Rutherford.
Old English hryÃ°er (“cattle") + ford (“ford").