"keto-" meaning in English

{
  "etymology_text": "A reduction of the word ketone.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix"
      },
      "expansion": "keto-",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organic chemistry",
          "orig": "en:Organic chemistry",
          "parents": [
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Derived from, substituted with, or involving a ketone."
      ],
      "id": "en-keto--en-prefix-Z2FmH8Yc",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "ketone",
          "ketone"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Derived from, substituted with, or involving a ketone."
      ],
      "related": [
        {
          "word": "keto"
        },
        {
          "word": "oxy-"
        },
        {
          "word": "hydro-"
        },
        {
          "word": "carbo-"
        }
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "keto-"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈkiːtoʊ-/"
    },
    {
      "rhymes": "-ˈiːtoʊ"
    },
    {
      "homophone": "chaeto-"
    }
  ],
  "word": "keto-"
}

{
  "etymology_text": "A reduction of the word ketone.",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix"
      },
      "expansion": "keto-",
      "name": "head"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "related": [
    {
      "word": "keto"
    },
    {
      "word": "oxy-"
    },
    {
      "word": "hydro-"
    },
    {
      "word": "carbo-"
    }
  ],
  "senses": [
    {
      "categories": [
        "English lemmas",
        "English prefixes",
        "English terms with IPA pronunciation",
        "English terms with homophones",
        "Rhymes:English/ˈiːtoʊ",
        "Rhymes:English/ˈiːtoʊ/2 syllables",
        "Translation table header lacks gloss",
        "en:Organic chemistry"
      ],
      "glosses": [
        "Derived from, substituted with, or involving a ketone."
      ],
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "ketone",
          "ketone"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Derived from, substituted with, or involving a ketone."
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈkiːtoʊ-/"
    },
    {
      "rhymes": "-ˈiːtoʊ"
    },
    {
      "homophone": "chaeto-"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "keto-"
    }
  ],
  "word": "keto-"
}