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What does PI stand for?

PI stands for Per Inch

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

  • Business, finance, etc.

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Other Resources:
We have 127 other definitions for PI in our Acronym Attic

Samples in periodicals archive:

2 grains per inch and straightness tolerance is an impressive plus/minus .
The photographs should be no smaller than 2 megapixels, which is approximately 4-by-6 inches at 300 pixels per inch or 16-by-24 inches at 75 pixels per inch.
Finely ridged lenticular sheet for holograms on greeting cards and point-of-purchase displays, which are seen from a few inches or feet away, might have 30 to 60 lenses per inch.