heavy nitrogen

noun

1. the stable isotope of nitrogen having a mass number of 15.

Example Sentences

For example, as trees and mutualistic fungi work together, a larger proportion of heavy nitrogen isotopes are left in the fungi, as heavy isotopes are more difficult to move.

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In general, samples collected from sites associated with high habitation had the most heavy nitrogen and were also in a poorer state.

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Scientists aren't sure whether heavy nitrogen ice eroded the lighter water ice to create the depressions.

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On Mars the ratio of heavy nitrogen, which has an extra neutron in its nucleus, to regular nitrogen is twice that of Earth.

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By comparing the nitrogen isotope ratios in the food and human blood samples, they were able to estimate how much heavy nitrogen the human body stores.

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