"polymembranous" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "poly",
        "3": "membranous"
      },
      "expansion": "poly- + membranous",
      "name": "prefix"
    }
  ],
  "etymology_text": "From poly- + membranous.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "polymembranous (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with poly-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Having many membranes"
      ],
      "id": "en-polymembranous-en-adj-2NiqntL9",
      "links": [
        [
          "membrane",
          "membrane"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛmbɹənəs"
    }
  ],
  "word": "polymembranous"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "poly",
        "3": "membranous"
      },
      "expansion": "poly- + membranous",
      "name": "prefix"
    }
  ],
  "etymology_text": "From poly- + membranous.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "polymembranous (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with poly-",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:English/ɛmbɹənəs",
        "Rhymes:English/ɛmbɹənəs/5 syllables"
      ],
      "glosses": [
        "Having many membranes"
      ],
      "links": [
        [
          "membrane",
          "membrane"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛmbɹənəs"
    }
  ],
  "word": "polymembranous"
}