"periostracum" meaning in English

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        "2": "peri",
        "3": "ostracum"
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      "expansion": "peri- + ostracum",
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    }
  ],
  "etymology_text": "Literally \"surrounding shell\", from peri- + ostracum.",
  "forms": [
    {
      "form": "periostraca",
      "tags": [
        "plural"
      ]
    }
  ],
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
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        {
          "kind": "lifeform",
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          "name": "Animal body parts",
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        }
      ],
      "derived": [
        {
          "word": "periostracal"
        }
      ],
      "glosses": [
        "The proteinaceous outer sheath of many molluscan shells."
      ],
      "id": "en-periostracum-en-noun-B1YEfJBu",
      "links": [
        [
          "malacology",
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        [
          "proteinaceous",
          "proteinaceous"
        ],
        [
          "sheath",
          "sheath"
        ],
        [
          "molluscan",
          "molluscan"
        ],
        [
          "shell",
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        ]
      ],
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        "(malacology) The proteinaceous outer sheath of many molluscan shells."
      ],
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        "biology",
        "malacology",
        "natural-sciences"
      ],
      "wikipedia": [
        "periostracum"
      ]
    }
  ],
  "word": "periostracum"
}

{
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    {
      "word": "periostracal"
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  "etymology_text": "Literally \"surrounding shell\", from peri- + ostracum.",
  "forms": [
    {
      "form": "periostraca",
      "tags": [
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  "pos": "noun",
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        "The proteinaceous outer sheath of many molluscan shells."
      ],
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        [
          "malacology",
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          "proteinaceous",
          "proteinaceous"
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        "(malacology) The proteinaceous outer sheath of many molluscan shells."
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  "word": "periostracum"
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