[edit] Summary
The Greek capital letter Psi is often used to represent the word, or study of, Psychology.
For example:
Ψ = Psychology Ψist = Psychologist.
Ψ, in biological terms, is a symbol used to represent water potential.
Ψ, in astrology, it's the symbol that represents Neptune.
[edit] Licensing
[edit] Comments
Copied from here on the english wikipedia.
