"seismic load" meaning in English

{
  "forms": [
    {
      "form": "seismic loads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seismic load (plural seismic loads)",
      "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"
        },
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        },
        {
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          "name": "Terms with Czech translations",
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Earthquake engineering",
          "orig": "en:Earthquake engineering",
          "parents": [
            "Engineering",
            "Applied sciences",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "External force applied to a building structure as a result of earthquake-generated agitation."
      ],
      "id": "en-seismic_load-en-noun-ZXo7XDL2",
      "links": [
        [
          "force",
          "force"
        ],
        [
          "building",
          "building"
        ],
        [
          "structure",
          "structure"
        ],
        [
          "earthquake-generated agitation",
          "earthquake"
        ]
      ],
      "translations": [
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "external force applied to a building structure",
          "tags": [
            "feminine"
          ],
          "word": "seizmická zátěž"
        }
      ]
    }
  ],
  "word": "seismic load"
}

{
  "forms": [
    {
      "form": "seismic loads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "seismic load (plural seismic loads)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Czech translations",
        "en:Earthquake engineering"
      ],
      "glosses": [
        "External force applied to a building structure as a result of earthquake-generated agitation."
      ],
      "links": [
        [
          "force",
          "force"
        ],
        [
          "building",
          "building"
        ],
        [
          "structure",
          "structure"
        ],
        [
          "earthquake-generated agitation",
          "earthquake"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "external force applied to a building structure",
      "tags": [
        "feminine"
      ],
      "word": "seizmická zátěž"
    }
  ],
  "word": "seismic load"
}