"Secchi depth" meaning in English

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      "expansion": "Italian Secchi",
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  "etymology_text": "From Secchi disk + depth, from Italian Secchi, from Angelo Secchi.",
  "forms": [
    {
      "form": "Secchi depths",
      "tags": [
        "plural"
      ]
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  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "A measure of the turbidity of a body of water; the depth at which a Secchi disk is no longer visible."
      ],
      "id": "en-Secchi_depth-en-noun-EjERhTaS",
      "links": [
        [
          "turbidity",
          "turbidity"
        ],
        [
          "Secchi disk",
          "Secchi disk"
        ]
      ],
      "related": [
        {
          "word": "Secchi disc"
        }
      ],
      "translations": [
        {
          "code": "it",
          "lang": "Italian",
          "sense": "Translations",
          "word": "profondità di scomparsa del disco di Secchi"
        }
      ],
      "wikipedia": [
        "en:Angelo Secchi"
      ]
    }
  ],
  "word": "Secchi depth"
}

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  "etymology_text": "From Secchi disk + depth, from Italian Secchi, from Angelo Secchi.",
  "forms": [
    {
      "form": "Secchi depths",
      "tags": [
        "plural"
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  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Secchi disc"
    }
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        "A measure of the turbidity of a body of water; the depth at which a Secchi disk is no longer visible."
      ],
      "links": [
        [
          "turbidity",
          "turbidity"
        ],
        [
          "Secchi disk",
          "Secchi disk"
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  "translations": [
    {
      "code": "it",
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      "word": "profondità di scomparsa del disco di Secchi"
    }
  ],
  "word": "Secchi depth"
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