"beta ray" meaning in English

{
  "forms": [
    {
      "form": "beta rays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "beta ray (plural beta rays)",
      "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": "Radioactivity",
          "orig": "en:Radioactivity",
          "parents": [
            "Nuclear physics",
            "Radiation",
            "Physics",
            "Quantum mechanics",
            "Energy",
            "Sciences",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Subatomic particles",
          "orig": "en:Subatomic particles",
          "parents": [
            "Matter",
            "Particle physics",
            "Chemistry",
            "Nature",
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A stream of beta particles (fast-moving electrons propagating through a gas or vacuum), such as emitted by a radioactive substance."
      ],
      "id": "en-beta_ray-en-noun-Tdwqe5jr",
      "links": [
        [
          "beta particle",
          "beta particle"
        ],
        [
          "electrons",
          "electrons"
        ],
        [
          "radioactive",
          "radioactive"
        ]
      ],
      "related": [
        {
          "word": "beta radiation"
        }
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "stream of beta particles",
          "word": "beetasäde"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "stream of beta particles",
          "tags": [
            "masculine"
          ],
          "word": "rayon bêta"
        }
      ]
    }
  ],
  "word": "beta ray"
}

{
  "forms": [
    {
      "form": "beta rays",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "beta ray (plural beta rays)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "beta radiation"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Radioactivity",
        "en:Subatomic particles"
      ],
      "glosses": [
        "A stream of beta particles (fast-moving electrons propagating through a gas or vacuum), such as emitted by a radioactive substance."
      ],
      "links": [
        [
          "beta particle",
          "beta particle"
        ],
        [
          "electrons",
          "electrons"
        ],
        [
          "radioactive",
          "radioactive"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "stream of beta particles",
      "word": "beetasäde"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "stream of beta particles",
      "tags": [
        "masculine"
      ],
      "word": "rayon bêta"
    }
  ],
  "word": "beta ray"
}