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Definition of Oxygen-18
1. Noun. (isotope) A minor stable isotope of oxygen, (nuclide 18 8 O), having eight protons and ten neutrons; it amounts to about 0.2% of the element in nature ¹
¹ Source: wiktionary.com
Medical Definition of Oxygen-18
1. A stable oxygen isotope making up 0.20% of natural oxygen; used in mass spectrometry and in NMR studies of tissue. Synonym: heavy oxygen. (05 Mar 2000)
Lexicographical Neighbors of Oxygen-18
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