File:Psi_uc_lc.svg · Wikimedia Commons · See Wikimedia Commons
Also known as psi
twenty-third letter of the Greek alphabet
AI overview
Ψ (psi) is the twenty-third letter of the Greek alphabet, used in writing the Greek language. It appears in English primarily through Greek-derived scientific and mathematical terms, making it a symbol readers encounter in academic and technical contexts.
AI-generated from the Wikipedia summary — may contain errors.
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Encyclopedic overview
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Archaic local variants
Excerpted from Wikipedia’s “Ψ” article, available under the CC BY-SA 4.0 licence.
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