"opter" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": ":af",
        "3": "opt",
        "4": "-er",
        "text": "+",
        "tree": "1"
      },
      "expansion": "From opt + -er.",
      "name": "ety"
    }
  ],
  "etymology_text": "From opt + -er.",
  "forms": [
    {
      "form": "opters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "opter (plural opters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries referencing ambiguous etymons",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries referencing missing etymons",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries referencing pages with etymology sections missing etymons",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with etymology texts",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with etymon",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -er",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using etymon with no ID",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with etymon",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              81,
              87
            ]
          ],
          "ref": "2012, Jeff Sellars, Light Shining in a Dark Place, page 50:",
          "text": "Hannibal Lecter is one of many in the gallery of cinema villains and unrepentant opters for evil who remind us that the only place where they will be at home is Hell or the void.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who opts, or makes a choice."
      ],
      "id": "en-opter-en-noun-pQXe26s2",
      "links": [
        [
          "opt",
          "opt"
        ]
      ]
    }
  ],
  "word": "opter"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": ":af",
        "3": "opt",
        "4": "-er",
        "text": "+",
        "tree": "1"
      },
      "expansion": "From opt + -er.",
      "name": "ety"
    }
  ],
  "etymology_text": "From opt + -er.",
  "forms": [
    {
      "form": "opters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "opter (plural opters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries referencing ambiguous etymons",
        "English entries referencing missing etymons",
        "English entries referencing pages with etymology sections missing etymons",
        "English entries with etymology texts",
        "English entries with etymon",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -er",
        "English terms with quotations",
        "Pages using etymon with no ID",
        "Pages with 3 entries",
        "Pages with entries",
        "Pages with etymon",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "bold_text_offsets": [
            [
              81,
              87
            ]
          ],
          "ref": "2012, Jeff Sellars, Light Shining in a Dark Place, page 50:",
          "text": "Hannibal Lecter is one of many in the gallery of cinema villains and unrepentant opters for evil who remind us that the only place where they will be at home is Hell or the void.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who opts, or makes a choice."
      ],
      "links": [
        [
          "opt",
          "opt"
        ]
      ]
    }
  ],
  "word": "opter"
}