nitric oxide

noun

nitric oxide

noun

Chemistry, Natural sciences, Physical sciences the binary compound of nitrogen and oxygen NO; an unstable compound which rapidly oxidizes in the presence of air.

In fact, nitric oxide (not to be confused with nitrous oxide, or laughing gas) is one of our primary signalling molecules.2019, Bill Bryson, The Body: A Guide for Occupants, Black Swan (2020), pages 156–157:

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