"pycnometer" meaning in 英语

{
  "categories": [
    {
      "kind": "other",
      "name": "有國際音標的英語詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "英語4音節詞",
      "parents": [],
      "source": "w"
    }
  ],
  "lang": "英语",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "名词",
  "senses": [
    {
      "glosses": [
        "比重瓶"
      ],
      "id": "zh-pycnometer-en-noun-2iTHqeS7"
    }
  ],
  "sounds": [
    {
      "ipa": "/pɪkˈnɒmɪtə(ɹ)/"
    }
  ],
  "word": "pycnometer"
}

{
  "categories": [
    "有國際音標的英語詞",
    "英語4音節詞"
  ],
  "lang": "英语",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "名词",
  "senses": [
    {
      "glosses": [
        "比重瓶"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pɪkˈnɒmɪtə(ɹ)/"
    }
  ],
  "word": "pycnometer"
}