"decalumen" meaning in Italien

{
  "categories": [
    {
      "kind": "other",
      "name": "Dérivations en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Lemmes en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en italien préfixés avec deca-",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Unités de mesure en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Italien",
      "orig": "italien",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Dérivé de lumen, avec le préfixe deca-."
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en italien de la physique",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Termes extrêmement rares en italien",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Décalumen (dalm)."
      ],
      "id": "fr-decalumen-it-noun-8VIjylkS",
      "raw_tags": [
        "Extrêmement rare"
      ],
      "tags": [
        "physical"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "decalumen"
}

{
  "categories": [
    "Dérivations en italien",
    "Lemmes en italien",
    "Mots en italien préfixés avec deca-",
    "Noms communs en italien",
    "Unités de mesure en italien",
    "italien"
  ],
  "etymology_texts": [
    "Dérivé de lumen, avec le préfixe deca-."
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Lexique en italien de la physique",
        "Termes extrêmement rares en italien"
      ],
      "glosses": [
        "Décalumen (dalm)."
      ],
      "raw_tags": [
        "Extrêmement rare"
      ],
      "tags": [
        "physical"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "decalumen"
}