"mitral annulus" meaning in English

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "Anatomy",
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      "glosses": [
        "A band of tissue to which the mitral valve leaflets are attached."
      ],
      "id": "en-mitral_annulus-en-noun-eTZkxOLc",
      "links": [
        [
          "anatomy",
          "anatomy"
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        [
          "cardiology",
          "cardiology"
        ],
        [
          "band",
          "band"
        ],
        [
          "tissue",
          "tissue"
        ],
        [
          "mitral valve",
          "mitral valve"
        ],
        [
          "leaflet",
          "leaflet"
        ],
        [
          "attach",
          "attach"
        ]
      ],
      "raw_glosses": [
        "(anatomy, cardiology) A band of tissue to which the mitral valve leaflets are attached."
      ],
      "topics": [
        "anatomy",
        "cardiology",
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "mitral annulus"
}

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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A band of tissue to which the mitral valve leaflets are attached."
      ],
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        [
          "anatomy",
          "anatomy"
        ],
        [
          "cardiology",
          "cardiology"
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        ],
        [
          "tissue",
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        [
          "mitral valve",
          "mitral valve"
        ],
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          "leaflet",
          "leaflet"
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          "attach",
          "attach"
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      ],
      "raw_glosses": [
        "(anatomy, cardiology) A band of tissue to which the mitral valve leaflets are attached."
      ],
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        "anatomy",
        "cardiology",
        "medicine",
        "sciences"
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  "word": "mitral annulus"
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