"α-ray" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de α et de ray (« rayon »)."
  ],
  "forms": [
    {
      "form": "α-rays",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "alpha ray"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "α-decay"
    },
    {
      "word": "alpha decay"
    },
    {
      "word": "α-particle"
    },
    {
      "word": "alpha particle"
    },
    {
      "word": "α-radioactivity"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais de la physique",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Lexique en anglais du nucléaire",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Rayon α, rayon alpha."
      ],
      "id": "fr-α-ray-en-noun--sKD27TJ",
      "raw_tags": [
        "Nucléaire"
      ],
      "tags": [
        "physical"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "α-radiation"
    },
    {
      "word": "alpha radiation"
    }
  ],
  "word": "α-ray"
}

{
  "categories": [
    "Lemmes en anglais",
    "Noms communs en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "Composé de α et de ray (« rayon »)."
  ],
  "forms": [
    {
      "form": "α-rays",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "alpha ray"
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Nom commun",
  "related": [
    {
      "word": "α-decay"
    },
    {
      "word": "alpha decay"
    },
    {
      "word": "α-particle"
    },
    {
      "word": "alpha particle"
    },
    {
      "word": "α-radioactivity"
    }
  ],
  "senses": [
    {
      "categories": [
        "Lexique en anglais de la physique",
        "Lexique en anglais du nucléaire"
      ],
      "glosses": [
        "Rayon α, rayon alpha."
      ],
      "raw_tags": [
        "Nucléaire"
      ],
      "tags": [
        "physical"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "α-radiation"
    },
    {
      "word": "alpha radiation"
    }
  ],
  "word": "α-ray"
}