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What does CIR stand for?

CIR stands for Carbon Isotope Ratio

This definition appears somewhat frequently and is found in the following Acronym Finder categories:

  • Science, medicine, engineering, etc.

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Other Resources:
We have 264 other meanings of CIR in our Acronym Attic

Samples in periodicals archive:

Professor Julia Lee-Thorp from Oxford University with researchers from Chad, France and the US analyzed the carbon isotope ratios in the teeth and found the signature of a diet rich in foods derived from C4 plants.