"orthoceras" meaning in English

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        "3": "κέρας",
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        "5": "a horn"
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      "expansion": "Ancient Greek κέρας (kéras, “a horn”)",
      "name": "der"
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  "etymology_text": "From ortho- + Ancient Greek κέρας (kéras, “a horn”).",
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        "plural"
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  "pos": "noun",
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        "Any nautiloid cephalopod mollusc of the genus Orthoceras, known only as fossils"
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          "mollusc",
          "mollusc"
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          "Orthoceras",
          "Orthoceras"
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          "fossil",
          "fossil"
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  "word": "orthoceras"
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      "expansion": "Ancient Greek κέρας (kéras, “a horn”)",
      "name": "der"
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  ],
  "etymology_text": "From ortho- + Ancient Greek κέρας (kéras, “a horn”).",
  "forms": [
    {
      "form": "orthocerata",
      "tags": [
        "plural"
      ]
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