"dehydro-" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "de-",
        "3": "hydro-"
      },
      "expansion": "de- + hydro-",
      "name": "prefix"
    }
  ],
  "etymology_text": "de- + hydro-",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix",
        "head": "",
        "sort": ""
      },
      "expansion": "dehydro-",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "dehydro-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English terms prefixed with de-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organic chemistry",
          "orig": "en:Organic chemistry",
          "parents": [
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "dehydroamino"
        },
        {
          "word": "dehydroasclepin"
        },
        {
          "word": "dehydrocalactin"
        },
        {
          "word": "dehydrocalotoxin"
        },
        {
          "word": "dehydrocalotropin"
        },
        {
          "word": "dehydrocorydalmine"
        },
        {
          "word": "dehydrouscharidin"
        }
      ],
      "glosses": [
        "Used to form the names of compounds that have lost one or more hydrogen atoms, especially those that have lost even numbers of hydrogen atoms to form double bonds"
      ],
      "id": "en-dehydro--en-prefix-TGi-wj4v",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "hydrogen",
          "hydrogen"
        ],
        [
          "double bond",
          "double bond"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Used to form the names of compounds that have lost one or more hydrogen atoms, especially those that have lost even numbers of hydrogen atoms to form double bonds"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "used to form the names of compounds that have lost one or more hydrogen atoms",
          "word": "déshydro-"
        }
      ]
    }
  ],
  "word": "dehydro-"
}

{
  "derived": [
    {
      "word": "dehydroamino"
    },
    {
      "word": "dehydroasclepin"
    },
    {
      "word": "dehydrocalactin"
    },
    {
      "word": "dehydrocalotoxin"
    },
    {
      "word": "dehydrocalotropin"
    },
    {
      "word": "dehydrocorydalmine"
    },
    {
      "word": "dehydrouscharidin"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "de-",
        "3": "hydro-"
      },
      "expansion": "de- + hydro-",
      "name": "prefix"
    }
  ],
  "etymology_text": "de- + hydro-",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix",
        "head": "",
        "sort": ""
      },
      "expansion": "dehydro-",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "dehydro-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "English lemmas",
        "English prefixes",
        "English terms prefixed with de-",
        "en:Organic chemistry"
      ],
      "glosses": [
        "Used to form the names of compounds that have lost one or more hydrogen atoms, especially those that have lost even numbers of hydrogen atoms to form double bonds"
      ],
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "hydrogen",
          "hydrogen"
        ],
        [
          "double bond",
          "double bond"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Used to form the names of compounds that have lost one or more hydrogen atoms, especially those that have lost even numbers of hydrogen atoms to form double bonds"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "used to form the names of compounds that have lost one or more hydrogen atoms",
      "word": "déshydro-"
    }
  ],
  "word": "dehydro-"
}