"oncostain" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "onco",
        "3": "stain"
      },
      "expansion": "onco- + stain",
      "name": "prefix"
    }
  ],
  "etymology_text": "From onco- + stain.",
  "forms": [
    {
      "form": "oncostains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "oncostain (plural oncostains)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A substance that stains cancerous tissue (in microscopic examination)"
      ],
      "id": "en-oncostain-en-noun-bbDpY5tx",
      "links": [
        [
          "stain",
          "stain"
        ],
        [
          "cancerous",
          "cancerous"
        ],
        [
          "tissue",
          "tissue"
        ]
      ]
    },
    {
      "alt_of": [
        {
          "word": "oncostatin"
        }
      ],
      "categories": [
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          "_dis": "12 88",
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          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w+disamb"
        },
        {
          "_dis": "34 66",
          "kind": "other",
          "name": "English terms prefixed with onco-",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "13 87",
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          "name": "Pages with 1 entry",
          "parents": [],
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          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Misspelling of oncostatin."
      ],
      "id": "en-oncostain-en-noun-yjOeas88",
      "links": [
        [
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  "word": "oncostain"
}

{
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    "English countable nouns",
    "English entries with incorrect language header",
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    "English nouns",
    "English terms prefixed with onco-",
    "Pages with 1 entry",
    "Pages with entries"
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  "etymology_templates": [
    {
      "args": {
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        "2": "onco",
        "3": "stain"
      },
      "expansion": "onco- + stain",
      "name": "prefix"
    }
  ],
  "etymology_text": "From onco- + stain.",
  "forms": [
    {
      "form": "oncostains",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "oncostain (plural oncostains)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "A substance that stains cancerous tissue (in microscopic examination)"
      ],
      "links": [
        [
          "stain",
          "stain"
        ],
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          "cancerous",
          "cancerous"
        ],
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          "tissue",
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        ]
      ]
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          "word": "oncostatin"
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        "Misspelling of oncostatin."
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  "word": "oncostain"
}