"mmH2O" meaning in Translingual

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      "name": "compound"
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  ],
  "etymology_text": "mm (“millimeter”) + H2O (“water”)",
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    {
      "form": "mmH₂O",
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      "alt_of": [
        {
          "extra": "A unit of pressure, the pressure exerted by a column of water of 1 mm in height at 4 °C (in standard conditions, the temperature at which water has maximum density, in standard Earth gravity)",
          "word": "millimeter of water"
        }
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      "glosses": [
        "Abbreviation of millimeter of water. A unit of pressure, the pressure exerted by a column of water of 1 mm in height at 4 °C (in standard conditions, the temperature at which water has maximum density, in standard Earth gravity)"
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        [
          "millimeter of water",
          "millimeter of water#Translingual"
        ],
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          "unit",
          "unit#English"
        ],
        [
          "pressure",
          "pressure#English"
        ],
        [
          "water",
          "water#English"
        ],
        [
          "mm",
          "mm"
        ],
        [
          "°C",
          "°C"
        ]
      ],
      "related": [
        {
          "word": "cmH2O"
        },
        {
          "word": "inH2O"
        },
        {
          "word": "mH2O"
        },
        {
          "word": "mmHg"
        },
        {
          "word": "atm"
        },
        {
          "word": "Pa"
        },
        {
          "word": "psi"
        },
        {
          "word": "Torr"
        }
      ],
      "synonyms": [
        {
          "word": "mm.g"
        },
        {
          "word": "mm.w.g."
        },
        {
          "word": "mm.wc"
        }
      ],
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        "abbreviation",
        "alt-of"
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      "wikipedia": [
        "en:millimetre of water"
      ]
    }
  ],
  "word": "mmH2O"
}

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  "etymology_text": "mm (“millimeter”) + H2O (“water”)",
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    {
      "form": "mmH₂O",
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    {
      "word": "cmH2O"
    },
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      "word": "inH2O"
    },
    {
      "word": "mH2O"
    },
    {
      "word": "mmHg"
    },
    {
      "word": "atm"
    },
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      "word": "Pa"
    },
    {
      "word": "psi"
    },
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  ],
  "senses": [
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          "word": "millimeter of water"
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      "glosses": [
        "Abbreviation of millimeter of water. A unit of pressure, the pressure exerted by a column of water of 1 mm in height at 4 °C (in standard conditions, the temperature at which water has maximum density, in standard Earth gravity)"
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  "synonyms": [
    {
      "word": "mm.g"
    },
    {
      "word": "mm.w.g."
    },
    {
      "word": "mm.wc"
    }
  ],
  "word": "mmH2O"
}