"seismic shift" meaning in English

{
  "etymology_text": "An allusion to the drastic change to the landscape caused by a massive earthquake.",
  "forms": [
    {
      "form": "seismic shifts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seismic shift (plural seismic shifts)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "1958, Waldo Frank, \"Mexico\" in The Romance of North America (Hardwick Moseley, ed.), Houghton Mifflin, p. 127 (Google snippet view)",
          "text": "The seismic shift in Mexico began in 1810 with the movement toward independence from Spain."
        },
        {
          "ref": "1999 December 6, Eamon Phoenix, “Peace Is Breaking Out”, in Time, retrieved 2015-05-19",
          "text": "For the republican movement, the acceptance of seats in a \"partitionist\" Assembly signaled a seismic shift in historical attitudes since the division of Ireland in 1921.",
          "type": "quotation"
        },
        {
          "ref": "2007 December 10, “Most Important of 2007”, in Businessweek, retrieved 2015-05-19",
          "text": "[T]he U.S. could be on the verge of a seismic shift, where it is possible to envision a time when it will no longer be the dominant economic superpower.",
          "type": "quotation"
        },
        {
          "ref": "2011 February 5, “The Aging of America”, in New York Times, retrieved 2015-05-19",
          "text": "Baby boomers began turning 65 in January, heralding a seismic shift in demographics worldwide.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A fundamental reorientation of a state of affairs."
      ],
      "id": "en-seismic_shift-en-noun-mbsYvzD4",
      "links": [
        [
          "fundamental",
          "fundamental"
        ],
        [
          "reorientation",
          "reorientation"
        ],
        [
          "state of affairs",
          "state of affairs"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) A fundamental reorientation of a state of affairs."
      ],
      "synonyms": [
        {
          "word": "upheaval"
        }
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-seismic shift.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/9a/En-au-seismic_shift.ogg/En-au-seismic_shift.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/9a/En-au-seismic_shift.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "word": "seismic shift"
}

{
  "etymology_text": "An allusion to the drastic change to the landscape caused by a massive earthquake.",
  "forms": [
    {
      "form": "seismic shifts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seismic shift (plural seismic shifts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English idioms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with audio links",
        "English terms with quotations"
      ],
      "examples": [
        {
          "ref": "1958, Waldo Frank, \"Mexico\" in The Romance of North America (Hardwick Moseley, ed.), Houghton Mifflin, p. 127 (Google snippet view)",
          "text": "The seismic shift in Mexico began in 1810 with the movement toward independence from Spain."
        },
        {
          "ref": "1999 December 6, Eamon Phoenix, “Peace Is Breaking Out”, in Time, retrieved 2015-05-19",
          "text": "For the republican movement, the acceptance of seats in a \"partitionist\" Assembly signaled a seismic shift in historical attitudes since the division of Ireland in 1921.",
          "type": "quotation"
        },
        {
          "ref": "2007 December 10, “Most Important of 2007”, in Businessweek, retrieved 2015-05-19",
          "text": "[T]he U.S. could be on the verge of a seismic shift, where it is possible to envision a time when it will no longer be the dominant economic superpower.",
          "type": "quotation"
        },
        {
          "ref": "2011 February 5, “The Aging of America”, in New York Times, retrieved 2015-05-19",
          "text": "Baby boomers began turning 65 in January, heralding a seismic shift in demographics worldwide.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A fundamental reorientation of a state of affairs."
      ],
      "links": [
        [
          "fundamental",
          "fundamental"
        ],
        [
          "reorientation",
          "reorientation"
        ],
        [
          "state of affairs",
          "state of affairs"
        ]
      ],
      "raw_glosses": [
        "(idiomatic) A fundamental reorientation of a state of affairs."
      ],
      "tags": [
        "idiomatic"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "En-au-seismic shift.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/9/9a/En-au-seismic_shift.ogg/En-au-seismic_shift.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/9/9a/En-au-seismic_shift.ogg",
      "tags": [
        "Australia"
      ],
      "text": "Audio (AU)"
    }
  ],
  "synonyms": [
    {
      "word": "upheaval"
    }
  ],
  "word": "seismic shift"
}