"gigasecond" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "giga",
        "3": "second"
      },
      "expansion": "giga- + second",
      "name": "prefix"
    }
  ],
  "etymology_text": "From giga- + second.",
  "forms": [
    {
      "form": "gigaseconds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gigasecond (plural gigaseconds)",
      "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"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with giga-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Slovak translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Metrology",
          "orig": "en:Metrology",
          "parents": [
            "Applied sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "SI units",
          "orig": "en:SI units",
          "parents": [
            "Units of measure",
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Units of measure",
          "orig": "en:Units of measure",
          "parents": [
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An SI unit of time equal to 10⁹ seconds. Symbol: Gs"
      ],
      "id": "en-gigasecond-en-noun-bbhUoV~H",
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "time",
          "time#English"
        ],
        [
          "second",
          "second"
        ],
        [
          "Gs",
          "Gs"
        ]
      ],
      "raw_glosses": [
        "(metrology) An SI unit of time equal to 10⁹ seconds. Symbol: Gs"
      ],
      "topics": [
        "metrology"
      ],
      "translations": [
        {
          "code": "sk",
          "lang": "Slovak",
          "sense": "a unit of time",
          "tags": [
            "feminine"
          ],
          "word": "gigasekunda"
        }
      ]
    }
  ],
  "word": "gigasecond"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "giga",
        "3": "second"
      },
      "expansion": "giga- + second",
      "name": "prefix"
    }
  ],
  "etymology_text": "From giga- + second.",
  "forms": [
    {
      "form": "gigaseconds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "gigasecond (plural gigaseconds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with giga-",
        "Entries with translation boxes",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Slovak translations",
        "en:Metrology",
        "en:SI units",
        "en:Time",
        "en:Units of measure"
      ],
      "glosses": [
        "An SI unit of time equal to 10⁹ seconds. Symbol: Gs"
      ],
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "time",
          "time#English"
        ],
        [
          "second",
          "second"
        ],
        [
          "Gs",
          "Gs"
        ]
      ],
      "raw_glosses": [
        "(metrology) An SI unit of time equal to 10⁹ seconds. Symbol: Gs"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "translations": [
    {
      "code": "sk",
      "lang": "Slovak",
      "sense": "a unit of time",
      "tags": [
        "feminine"
      ],
      "word": "gigasekunda"
    }
  ],
  "word": "gigasecond"
}