"psi function" meaning in English

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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A function of a complex variable obtained by differentiating the logarithm of a gamma function; the digamma function"
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        [
          "complex",
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          "variable",
          "variable"
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        [
          "differentiating",
          "differentiating"
        ],
        [
          "logarithm",
          "logarithm"
        ],
        [
          "gamma function",
          "gamma function"
        ],
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          "digamma function",
          "digamma function"
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        "(mathematics) A function of a complex variable obtained by differentiating the logarithm of a gamma function; the digamma function"
      ],
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        "mathematics",
        "sciences"
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          "name": "Physics",
          "orig": "en:Physics",
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            "Fundamental"
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      "glosses": [
        "The Schrödinger wave function"
      ],
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          "physics",
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          "Schrödinger wave function",
          "Schrödinger wave function"
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        "(physics) The Schrödinger wave function"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
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  "word": "psi function"
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      ],
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          "complex",
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          "differentiating",
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        ],
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          "logarithm",
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          "gamma function",
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        "mathematics",
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        "(physics) The Schrödinger wave function"
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