f soddy

Soddy

[sod-ee]
noun
Frederick, 1877–1956, English chemist: Nobel prize 1921.
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World English Dictionary
Soddy (ˈsɒdɪ)
 
n
Frederick. 1877--1956, English chemist, whose work on radioactive disintegration led to the discovery of isotopes: Nobel prize for chemistry 1921

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
Soddy   (sŏd'ē)  Pronunciation Key 
British chemist who was a pioneer in the study of radioactivity. With Ernest Rutherford, he explained the atomic disintegration of radioactive elements. Soddy also coined the word isotope to describe elements that were chemically identical but had different atomic weights. He was awarded the Nobel Prize for chemistry in 1921.
The American Heritage® Science Dictionary
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