"giant quasar" meaning in English

{
  "etymology_text": "giant + quasar",
  "forms": [
    {
      "form": "giant quasars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "giant quasar (plural giant quasars)",
      "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 entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms with non-redundant non-automated sortkeys",
          "parents": [
            "Terms with non-redundant non-automated sortkeys",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Black holes",
          "orig": "en:Black holes",
          "parents": [
            "Astronomy",
            "Astrophysics",
            "Gravity",
            "Relativity",
            "Sciences",
            "Space",
            "Physics",
            "Acceleration",
            "Mechanics",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Galaxies",
          "orig": "en:Galaxies",
          "parents": [
            "Celestial bodies",
            "Space",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a quasar embedded in a double-lobed radio source, similar to a radio galaxy, whereby the quasar replaces a non-quasar galaxy, where the radio source extends over 1Mpc."
      ],
      "id": "en-giant_quasar-en-noun-iUZOpG9Q",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "quasar",
          "quasar"
        ],
        [
          "lobe",
          "lobe"
        ],
        [
          "radio",
          "radio"
        ],
        [
          "radio galaxy",
          "radio galaxy"
        ],
        [
          "galaxy",
          "galaxy"
        ]
      ],
      "raw_glosses": [
        "(astronomy) a quasar embedded in a double-lobed radio source, similar to a radio galaxy, whereby the quasar replaces a non-quasar galaxy, where the radio source extends over 1Mpc."
      ],
      "related": [
        {
          "word": "giant radio galaxy"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "word": "giant quasar"
}

{
  "etymology_text": "giant + quasar",
  "forms": [
    {
      "form": "giant quasars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "giant quasar (plural giant quasars)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "giant radio galaxy"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with non-redundant non-automated sortkeys",
        "en:Black holes",
        "en:Galaxies"
      ],
      "glosses": [
        "a quasar embedded in a double-lobed radio source, similar to a radio galaxy, whereby the quasar replaces a non-quasar galaxy, where the radio source extends over 1Mpc."
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "quasar",
          "quasar"
        ],
        [
          "lobe",
          "lobe"
        ],
        [
          "radio",
          "radio"
        ],
        [
          "radio galaxy",
          "radio galaxy"
        ],
        [
          "galaxy",
          "galaxy"
        ]
      ],
      "raw_glosses": [
        "(astronomy) a quasar embedded in a double-lobed radio source, similar to a radio galaxy, whereby the quasar replaces a non-quasar galaxy, where the radio source extends over 1Mpc."
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "word": "giant quasar"
}