"histamin" meaning in English

{
  "forms": [
    {
      "form": "histamins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "histamin (countable and uncountable, plural histamins)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "histamine"
        }
      ],
      "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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        {
          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1913 January 5, Henry G. Barbour, “Note on the action of histamin upon surviving arteries”, in The Journal of Pharmacology and Experimental Therapeutics, volume 3, number 3, page 245:",
          "text": "Histamin, an active principle of ergot, is a base produced by splitting off carbon dioxine from histidin by chemical or bacterial agents.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Dated form of histamine."
      ],
      "id": "en-histamin-en-noun-BgH4ADgM",
      "links": [
        [
          "histamine",
          "histamine#English"
        ]
      ],
      "tags": [
        "alt-of",
        "countable",
        "dated",
        "uncountable"
      ]
    }
  ],
  "word": "histamin"
}

{
  "forms": [
    {
      "form": "histamins",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "histamin (countable and uncountable, plural histamins)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "histamine"
        }
      ],
      "categories": [
        "English countable nouns",
        "English dated forms",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "English uncountable nouns",
        "Pages with 4 entries",
        "Pages with entries"
      ],
      "examples": [
        {
          "ref": "1913 January 5, Henry G. Barbour, “Note on the action of histamin upon surviving arteries”, in The Journal of Pharmacology and Experimental Therapeutics, volume 3, number 3, page 245:",
          "text": "Histamin, an active principle of ergot, is a base produced by splitting off carbon dioxine from histidin by chemical or bacterial agents.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Dated form of histamine."
      ],
      "links": [
        [
          "histamine",
          "histamine#English"
        ]
      ],
      "tags": [
        "alt-of",
        "countable",
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      ]
    }
  ],
  "word": "histamin"
}