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Acronymfinder

What does PSI stand for?

PSI stands for Pollution Standard Index


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

  • Science, medicine, engineering, etc.

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We have 794 other meanings of PSI in our Acronym Attic

Samples in periodicals archive:

The new index, which will replace the Pollution Standard Index, adds a new category called ``unhealthful for sensitive groups'' which will fall between moderate and unhealthful smog levels.