"mortiferous" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "mortifer"
      },
      "expansion": "Latin mortifer",
      "name": "uder"
    },
    {
      "args": {
        "1": "en",
        "2": "",
        "3": "ous"
      },
      "expansion": "+ -ous",
      "name": "suffix"
    }
  ],
  "etymology_text": "From Latin mortifer + -ous.",
  "forms": [
    {
      "form": "more mortiferous",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most mortiferous",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mortiferous (comparative more mortiferous, superlative most mortiferous)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "_dis": "49 51",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "53 47",
          "kind": "other",
          "name": "English terms suffixed with -ous",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "49 51",
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "2002, Colin Jones, The Great Nation, Penguin, published 2003, page 140",
          "text": "Breton recruits were notorious for suffering from la nostalgie – a mortiferous form of homesickness.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Causing spiritual death."
      ],
      "id": "en-mortiferous-en-adj-NNq21stQ",
      "links": [
        [
          "spiritual",
          "spiritual"
        ],
        [
          "death",
          "death"
        ]
      ],
      "raw_glosses": [
        "(now rare) Causing spiritual death."
      ],
      "tags": [
        "archaic"
      ]
    },
    {
      "categories": [
        {
          "_dis": "49 51",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "53 47",
          "kind": "other",
          "name": "English terms suffixed with -ous",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "49 51",
          "kind": "other",
          "name": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Causing physical death; deadly, fatal, lethal."
      ],
      "id": "en-mortiferous-en-adj-~icNlFBJ",
      "links": [
        [
          "deadly",
          "deadly"
        ],
        [
          "fatal",
          "fatal"
        ],
        [
          "lethal",
          "lethal"
        ]
      ],
      "translations": [
        {
          "_dis1": "4 96",
          "code": "ru",
          "lang": "Russian",
          "roman": "smertonosnyj",
          "sense": "deadly, fatal, lethal",
          "word": "смертоносный"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mɔːˈtɪfəɹəs/",
      "tags": [
        "UK"
      ]
    }
  ],
  "word": "mortiferous"
}

{
  "categories": [
    "English 4-syllable words",
    "English adjectives",
    "English entries with incorrect language header",
    "English lemmas",
    "English terms derived from Latin",
    "English terms suffixed with -ous",
    "English terms with IPA pronunciation",
    "English undefined derivations"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "mortifer"
      },
      "expansion": "Latin mortifer",
      "name": "uder"
    },
    {
      "args": {
        "1": "en",
        "2": "",
        "3": "ous"
      },
      "expansion": "+ -ous",
      "name": "suffix"
    }
  ],
  "etymology_text": "From Latin mortifer + -ous.",
  "forms": [
    {
      "form": "more mortiferous",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most mortiferous",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mortiferous (comparative more mortiferous, superlative most mortiferous)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English terms with quotations",
        "English terms with rare senses",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2002, Colin Jones, The Great Nation, Penguin, published 2003, page 140",
          "text": "Breton recruits were notorious for suffering from la nostalgie – a mortiferous form of homesickness.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Causing spiritual death."
      ],
      "links": [
        [
          "spiritual",
          "spiritual"
        ],
        [
          "death",
          "death"
        ]
      ],
      "raw_glosses": [
        "(now rare) Causing spiritual death."
      ],
      "tags": [
        "archaic"
      ]
    },
    {
      "glosses": [
        "Causing physical death; deadly, fatal, lethal."
      ],
      "links": [
        [
          "deadly",
          "deadly"
        ],
        [
          "fatal",
          "fatal"
        ],
        [
          "lethal",
          "lethal"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/mɔːˈtɪfəɹəs/",
      "tags": [
        "UK"
      ]
    }
  ],
  "translations": [
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "smertonosnyj",
      "sense": "deadly, fatal, lethal",
      "word": "смертоносный"
    }
  ],
  "word": "mortiferous"
}