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psi

Noun

Singular
psi

Plural
countable and uncountable; psis

psi (countable and uncountable; plural psis)

  1. (countable) The twenty-third letter of Classical and Modern Greek and the twenty-fourth letter of Old and Ancient Greek.
  2. (uncountable) A form of psychic energy.
    1993, ‘Come, lad,’ he said. ‘We will take tea together and speak of the noumenon, the psi and other more heterogenous phenomena.’ — Will Self, My Idea of Fun
  • Letter of the Greek alphabet: Ψ ψ

3 letters in word "psi": I P S.

Anagrams of psi:

Words found within psi:

is pi si