"ascertainer" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ascertain",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "ascertain + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From ascertain + -er.",
  "forms": [
    {
      "form": "ascertainers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ascertainer (plural ascertainers)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -er (agent noun)",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2009, Aviva Ben-Ur, Sephardic Jews in America: A Diasporic History, page 109:",
          "text": "Dahbany-Miraglia argues that in the Middle East religion was the dominant criterion of ethnic categorization, whereas in the United States skin color and other physical markers often prevailed as ascertainers of Jewishness.",
          "type": "quote"
        }
      ],
      "glosses": [
        "One who, or that which, ascertains."
      ],
      "id": "en-ascertainer-en-noun-pzJWxZQD",
      "links": [
        [
          "ascertain",
          "ascertain"
        ]
      ]
    }
  ],
  "word": "ascertainer"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ascertain",
        "3": "er",
        "id2": "agent noun"
      },
      "expansion": "ascertain + -er",
      "name": "suffix"
    }
  ],
  "etymology_text": "From ascertain + -er.",
  "forms": [
    {
      "form": "ascertainers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ascertainer (plural ascertainers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -er (agent noun)",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2009, Aviva Ben-Ur, Sephardic Jews in America: A Diasporic History, page 109:",
          "text": "Dahbany-Miraglia argues that in the Middle East religion was the dominant criterion of ethnic categorization, whereas in the United States skin color and other physical markers often prevailed as ascertainers of Jewishness.",
          "type": "quote"
        }
      ],
      "glosses": [
        "One who, or that which, ascertains."
      ],
      "links": [
        [
          "ascertain",
          "ascertain"
        ]
      ]
    }
  ],
  "word": "ascertainer"
}