"n-butano" meaning in Italien

{
  "categories": [
    {
      "kind": "other",
      "name": "Lemmes en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en italien",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Italien",
      "orig": "italien",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Composé du préfixe n-, signifiant « normal », et de butano (« butane »).."
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Substances chimiques en italien",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "n-Butane, butane (CH₃ – CH₂ – CH₂ – CH₃)."
      ],
      "id": "fr-n-butano-it-noun-eimThi7p",
      "topics": [
        "chemistry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈɛn.ne bu.ˈta.no\\"
    }
  ],
  "synonyms": [
    {
      "word": "butano"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "n-butano"
}

{
  "categories": [
    "Lemmes en italien",
    "Noms communs en italien",
    "italien"
  ],
  "etymology_texts": [
    "Composé du préfixe n-, signifiant « normal », et de butano (« butane »).."
  ],
  "lang": "Italien",
  "lang_code": "it",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "categories": [
        "Substances chimiques en italien"
      ],
      "glosses": [
        "n-Butane, butane (CH₃ – CH₂ – CH₂ – CH₃)."
      ],
      "topics": [
        "chemistry"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\ˈɛn.ne bu.ˈta.no\\"
    }
  ],
  "synonyms": [
    {
      "word": "butano"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "n-butano"
}