"penguin diagram" meaning in English

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  "etymology_text": "Coined by John Ellis in 1977, based on the shape of the diagram and inspired by a bet made with Melissa Franklin to put the word \"penguin\" in his next paper.",
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      "form": "penguin diagrams",
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      "glosses": [
        "A type of unicyclic Feynman diagram in which a quark temporarily changes flavor and engages in an interaction."
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        "(physics) A type of unicyclic Feynman diagram in which a quark temporarily changes flavor and engages in an interaction."
      ],
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        "natural-sciences",
        "physical-sciences",
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      "form": "penguin diagrams",
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        "A type of unicyclic Feynman diagram in which a quark temporarily changes flavor and engages in an interaction."
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        "(physics) A type of unicyclic Feynman diagram in which a quark temporarily changes flavor and engages in an interaction."
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        "physics"
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