Noun
English Wikipedia has an article on:Isotopes of oxygenWikipedia
oxygen-16 (uncountable)
(physics) The major stable isotope of oxygen, 8O, having eight protons and eight neutrons; it amounts to over 99% of the element in nature
Analysis of a silicon wafer exposed to the solar wind in space and returned by the crashed Genesis spacecraft has shown that the Sun has a higher proportion of oxygen-16 than does the Earth. Source: Internet
Developments in mass spectrometry led to the adoption of oxygen-16 as the standard substance, in lieu of natural oxygen. Source: Internet
The first 1958 experiment bombarded plutonium-239 and -241 with oxygen-16 ions. Source: Internet