"mass energy" meaning in English

{
  "forms": [
    {
      "form": "mass energies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mass energy (plural mass energies)",
      "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": "Entries with translation boxes",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Mandarin terms with non-redundant manual transliterations",
          "parents": [
            "Terms with non-redundant manual transliterations",
            "Entry maintenance"
          ],
          "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 Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Irish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "Even a minuscule quantity of matter contains an incredible amount of mass energy.",
          "type": "example"
        }
      ],
      "glosses": [
        "The energy present in an object because of its mass"
      ],
      "id": "en-mass_energy-en-noun-ixHSkwdh",
      "links": [
        [
          "physics",
          "physics"
        ]
      ],
      "raw_glosses": [
        "(physics) The energy present in an object because of its mass"
      ],
      "related": [
        {
          "word": "E=mc²"
        }
      ],
      "synonyms": [
        {
          "word": "mass-energy"
        }
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "alt": "zhìnéng or zhínéng [Taiwan]",
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "sense": "energy present in an object because of its mass",
          "word": "質能 /质能"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "energy present in an object because of its mass",
          "word": "massaenergia"
        },
        {
          "code": "ga",
          "lang": "Irish",
          "sense": "energy present in an object because of its mass",
          "tags": [
            "masculine"
          ],
          "word": "maisfhuinneamh"
        }
      ],
      "wikipedia": [
        "mass energy"
      ]
    }
  ],
  "word": "mass energy"
}

{
  "forms": [
    {
      "form": "mass energies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "mass energy (plural mass energies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "E=mc²"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with usage examples",
        "Entries with translation boxes",
        "Mandarin terms with non-redundant manual transliterations",
        "Pages with 1 entry",
        "Pages with entries",
        "Terms with Finnish translations",
        "Terms with Irish translations",
        "Terms with Mandarin translations",
        "en:Physics"
      ],
      "examples": [
        {
          "text": "Even a minuscule quantity of matter contains an incredible amount of mass energy.",
          "type": "example"
        }
      ],
      "glosses": [
        "The energy present in an object because of its mass"
      ],
      "links": [
        [
          "physics",
          "physics"
        ]
      ],
      "raw_glosses": [
        "(physics) The energy present in an object because of its mass"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "wikipedia": [
        "mass energy"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "mass-energy"
    }
  ],
  "translations": [
    {
      "alt": "zhìnéng or zhínéng [Taiwan]",
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "sense": "energy present in an object because of its mass",
      "word": "質能 /质能"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "energy present in an object because of its mass",
      "word": "massaenergia"
    },
    {
      "code": "ga",
      "lang": "Irish",
      "sense": "energy present in an object because of its mass",
      "tags": [
        "masculine"
      ],
      "word": "maisfhuinneamh"
    }
  ],
  "word": "mass energy"
}