"particella β" meaning in Italien

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions nominales en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Particules subatomiques en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Italien",
      "orig": "italien",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé de particeilla (« particule ») et de β."
  ],
  "forms": [
    {
      "form": "particelle β",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "related": [
    {
      "word": "particella beta"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Particule β."
      ],
      "id": "fr-particella_β-it-noun-ciy320lX",
      "raw_tags": [
        "Nucléaire"
      ],
      "tags": [
        "physical"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "decadimento β"
    },
    {
      "word": "decadimento beta"
    },
    {
      "word": "raggio β"
    },
    {
      "sense": "généralement pluriel",
      "word": "raggio beta"
    },
    {
      "word": "radiazione β"
    },
    {
      "sense": "généralement pluriel",
      "word": "radiazione beta"
    },
    {
      "word": "radioattività β"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "particella β"
}

{
  "categories": [
    "Locutions nominales en italien",
    "Particules subatomiques en italien",
    "italien"
  ],
  "etymology_texts": [
    "Composé de particeilla (« particule ») et de β."
  ],
  "forms": [
    {
      "form": "particelle β",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "related": [
    {
      "word": "particella beta"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Particule β."
      ],
      "raw_tags": [
        "Nucléaire"
      ],
      "tags": [
        "physical"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "decadimento β"
    },
    {
      "word": "decadimento beta"
    },
    {
      "word": "raggio β"
    },
    {
      "sense": "généralement pluriel",
      "word": "raggio beta"
    },
    {
      "word": "radiazione β"
    },
    {
      "sense": "généralement pluriel",
      "word": "radiazione beta"
    },
    {
      "word": "radioattività β"
    }
  ],
  "tags": [
    "feminine"
  ],
  "word": "particella β"
}