Etymology of roton

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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      "name": "suffix",
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        "1": "en",
        "2": "rotation",
        "3": "on"
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      "expansion": "rotation + -on"
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      "rotation",
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      "-on",
      "-on#English"
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  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "The quantum of rotation in a superfluid",
        "an elementary excitation or quasiparticle in a superfluid"
      ],
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