See also: psi, Psi, psí, and pśi

English edit

Noun edit

PSI

  1. Initialism of pre-sentence investigation.
  2. Initialism of protein structure initiative.
  3. Initialism of pollutant safety/standard index (measurement of the air pollutant such as haze)

Proper noun edit

PSI

  1. (UK politics) Initialism of Policy Studies Institute, a British think tank.

Anagrams edit