"myostracum" meaning in English

{
  "forms": [
    {
      "form": "myostraca",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "myostraca"
      },
      "expansion": "myostracum (plural myostraca)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Zoology",
          "orig": "en:Zoology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1964, Shell Structure and Muscle Scars of Cap-shaped Archaeogastropods:",
          "text": "At this place in the myostracum the smaller, second-order prisms […] range from two to 15 microns in diameter.",
          "type": "quote"
        },
        {
          "ref": "2014, Adolf Seilacher, Alan D. Gishlick, Morphodynamics, page 68:",
          "text": "In contrast to the muscle scars, the growth tracks of which are marked by a radial stretch of myostracum, the growth track of the pallial line is the boundary surface between two shell layers.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Part of shell wall secreted at attachment of adductor muscles."
      ],
      "id": "en-myostracum-en-noun-ko0weYxg",
      "links": [
        [
          "zoology",
          "zoology"
        ]
      ],
      "raw_glosses": [
        "(zoology) Part of shell wall secreted at attachment of adductor muscles."
      ],
      "related": [
        {
          "word": "myostracal"
        }
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "myostracum"
}

{
  "forms": [
    {
      "form": "myostraca",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "myostraca"
      },
      "expansion": "myostracum (plural myostraca)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "myostracal"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English nouns with irregular plurals",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned",
        "en:Zoology"
      ],
      "examples": [
        {
          "ref": "1964, Shell Structure and Muscle Scars of Cap-shaped Archaeogastropods:",
          "text": "At this place in the myostracum the smaller, second-order prisms […] range from two to 15 microns in diameter.",
          "type": "quote"
        },
        {
          "ref": "2014, Adolf Seilacher, Alan D. Gishlick, Morphodynamics, page 68:",
          "text": "In contrast to the muscle scars, the growth tracks of which are marked by a radial stretch of myostracum, the growth track of the pallial line is the boundary surface between two shell layers.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Part of shell wall secreted at attachment of adductor muscles."
      ],
      "links": [
        [
          "zoology",
          "zoology"
        ]
      ],
      "raw_glosses": [
        "(zoology) Part of shell wall secreted at attachment of adductor muscles."
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "myostracum"
}