Associations to the word «Psi»

Wiktionary

PSI, noun. (countable) The twenty-third letter of Classical and Modern Greek and the twenty-fifth letter of Old and Ancient Greek.
PSI, noun. (uncountable) (parapsychology) A form of psychic energy.
PSI FUNCTION, noun. (mathematics) A function of a complex variable obtained by differentiating the logarithm of a gamma function; the digamma function
PSI FUNCTION, noun. (physics) The Schrödinger wave function
PSI FUNCTIONS, noun. Plural of psi function

Dictionary definition

PSI, noun. A unit of pressure.
PSI, noun. The 23rd letter of the Greek alphabet.

Wise words

Abuse of words has been the great instrument of sophistry and chicanery, of party, faction, and division of society.
John Adams