"darkening" meaning in English

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      "expansion": "darkening",
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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "form_of": [
        {
          "word": "darken"
        }
      ],
      "glosses": [
        "present participle and gerund of darken"
      ],
      "id": "en-darkening-en-verb-anxWXmjR",
      "links": [
        [
          "darken",
          "darken#English"
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        "gerund",
        "participle",
        "present"
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  ],
  "word": "darkening"
}

{
  "forms": [
    {
      "form": "darkenings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {
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      "expansion": "darkening (countable and uncountable, plural darkenings)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "_dis": "84 16",
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          "name": "Terms with Arabic translations",
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        }
      ],
      "derived": [
        {
          "word": "antidarkening"
        },
        {
          "word": "gravity darkening"
        },
        {
          "word": "limb darkening"
        },
        {
          "word": "photodarkening"
        }
      ],
      "examples": [
        {
          "ref": "1951 October, R. S. McNaught, “Lines of Approach”, in Railway Magazine, page 704:",
          "text": "At last the first glimpse from a bridge of an open-top red bus, and a noticeable darkening of the atmosphere from the smoke of London: then the increasingly dingy stations with double-barrel names, set amid what has always been to me the outstanding feature of the \"Premier Line\" approach to London—the positively marvellous display of crazy chimney-pots on the grey inner suburban houses. As many as twenty, all of varying style, standing together like ranks of jagged teeth, and providing a Dickensian back-cloth which no other route can boast.",
          "type": "quote"
        },
        {
          "ref": "1978, Gerald Leonard Howett, Kenneth Low Kelly, E. Thomas Pierce, Emergency vehicle warning lights: state of the art:",
          "text": "NEGATIVE FLASHES — Brief darkenings of a light that is otherwise steadily on.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The act of something becoming darker."
      ],
      "id": "en-darkening-en-noun-7ekox49G",
      "related": [
        {
          "word": "darkeningly"
        },
        {
          "word": "undarkening"
        }
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "translations": [
        {
          "code": "ar",
          "lang": "Arabic",
          "roman": "taswīd",
          "sense": "act of something becoming darker",
          "tags": [
            "masculine"
          ],
          "word": "تَسْوِيد"
        },
        {
          "code": "grc",
          "lang": "Ancient Greek",
          "roman": "amaúrōsis",
          "sense": "act of something becoming darker",
          "tags": [
            "feminine"
          ],
          "word": "ἀμαύρωσις"
        }
      ]
    }
  ],
  "word": "darkening"
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "form_of": [
        {
          "word": "darken"
        }
      ],
      "glosses": [
        "present participle and gerund of darken"
      ],
      "links": [
        [
          "darken",
          "darken#English"
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      "tags": [
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  "word": "darkening"
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    "English uncountable nouns",
    "English verb forms",
    "Entries with translation boxes",
    "Pages with 1 entry",
    "Pages with entries",
    "Terms with Ancient Greek translations",
    "Terms with Arabic translations"
  ],
  "derived": [
    {
      "word": "antidarkening"
    },
    {
      "word": "gravity darkening"
    },
    {
      "word": "limb darkening"
    },
    {
      "word": "photodarkening"
    }
  ],
  "forms": [
    {
      "form": "darkenings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
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      "expansion": "darkening (countable and uncountable, plural darkenings)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "darkeningly"
    },
    {
      "word": "undarkening"
    }
  ],
  "senses": [
    {
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        "Quotation templates to be cleaned"
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      "examples": [
        {
          "ref": "1951 October, R. S. McNaught, “Lines of Approach”, in Railway Magazine, page 704:",
          "text": "At last the first glimpse from a bridge of an open-top red bus, and a noticeable darkening of the atmosphere from the smoke of London: then the increasingly dingy stations with double-barrel names, set amid what has always been to me the outstanding feature of the \"Premier Line\" approach to London—the positively marvellous display of crazy chimney-pots on the grey inner suburban houses. As many as twenty, all of varying style, standing together like ranks of jagged teeth, and providing a Dickensian back-cloth which no other route can boast.",
          "type": "quote"
        },
        {
          "ref": "1978, Gerald Leonard Howett, Kenneth Low Kelly, E. Thomas Pierce, Emergency vehicle warning lights: state of the art:",
          "text": "NEGATIVE FLASHES — Brief darkenings of a light that is otherwise steadily on.",
          "type": "quote"
        }
      ],
      "glosses": [
        "The act of something becoming darker."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "translations": [
    {
      "code": "ar",
      "lang": "Arabic",
      "roman": "taswīd",
      "sense": "act of something becoming darker",
      "tags": [
        "masculine"
      ],
      "word": "تَسْوِيد"
    },
    {
      "code": "grc",
      "lang": "Ancient Greek",
      "roman": "amaúrōsis",
      "sense": "act of something becoming darker",
      "tags": [
        "feminine"
      ],
      "word": "ἀμαύρωσις"
    }
  ],
  "word": "darkening"
}