"protoxylem" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "proto",
        "3": "xylem"
      },
      "expansion": "proto- + xylem",
      "name": "prefix"
    }
  ],
  "etymology_text": "proto- + xylem",
  "forms": [
    {
      "form": "protoxylems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "protoxylem (plural protoxylems)",
      "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"
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          "source": "w"
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          "parents": [
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with proto-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Plant tissues",
          "orig": "en:Plant tissues",
          "parents": [
            "Tissues",
            "Body parts",
            "Body",
            "Anatomy",
            "Human",
            "Biology",
            "Medicine",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The first xylem to form in a plant."
      ],
      "id": "en-protoxylem-en-noun-zdUw8jky",
      "links": [
        [
          "xylem",
          "xylem"
        ],
        [
          "plant",
          "plant"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "first xylem",
          "word": "protoksyleemi"
        }
      ]
    }
  ],
  "word": "protoxylem"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "proto",
        "3": "xylem"
      },
      "expansion": "proto- + xylem",
      "name": "prefix"
    }
  ],
  "etymology_text": "proto- + xylem",
  "forms": [
    {
      "form": "protoxylems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "protoxylem (plural protoxylems)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English nouns",
        "English terms prefixed with proto-",
        "en:Plant tissues"
      ],
      "glosses": [
        "The first xylem to form in a plant."
      ],
      "links": [
        [
          "xylem",
          "xylem"
        ],
        [
          "plant",
          "plant"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "first xylem",
      "word": "protoksyleemi"
    }
  ],
  "word": "protoxylem"
}