"molecular core" meaning in English

{
  "forms": [
    {
      "form": "molecular cores",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "molecular core (plural molecular cores)",
      "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": "topical",
          "langcode": "en",
          "name": "Astrophysics",
          "orig": "en:Astrophysics",
          "parents": [
            "Astronomy",
            "Physics",
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "Herbig-Haro object"
        },
        {
          "word": "absorption nebula"
        },
        {
          "word": "dark nebula"
        },
        {
          "word": "interstellar nebula"
        },
        {
          "word": "interstellar cloud"
        },
        {
          "word": "nebula"
        }
      ],
      "glosses": [
        "a dense core found in molecular clouds which lead to the formation of stars"
      ],
      "hyponyms": [
        {
          "alt": "a molecular core which contains a protostar or YSO",
          "word": "protostellar core"
        }
      ],
      "id": "en-molecular_core-en-noun-T41Rtbu6",
      "links": [
        [
          "core",
          "core"
        ],
        [
          "molecular cloud",
          "molecular cloud"
        ],
        [
          "star",
          "star"
        ]
      ],
      "related": [
        {
          "word": "molecular cloud"
        }
      ]
    }
  ],
  "word": "molecular core"
}

{
  "coordinate_terms": [
    {
      "word": "Herbig-Haro object"
    },
    {
      "word": "absorption nebula"
    },
    {
      "word": "dark nebula"
    },
    {
      "word": "interstellar nebula"
    },
    {
      "word": "interstellar cloud"
    },
    {
      "word": "nebula"
    }
  ],
  "forms": [
    {
      "form": "molecular cores",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "molecular core (plural molecular cores)",
      "name": "en-noun"
    }
  ],
  "hyponyms": [
    {
      "alt": "a molecular core which contains a protostar or YSO",
      "word": "protostellar core"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "molecular cloud"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Astrophysics"
      ],
      "glosses": [
        "a dense core found in molecular clouds which lead to the formation of stars"
      ],
      "links": [
        [
          "core",
          "core"
        ],
        [
          "molecular cloud",
          "molecular cloud"
        ],
        [
          "star",
          "star"
        ]
      ]
    }
  ],
  "word": "molecular core"
}