"acyl anhydride" meaning in English

{
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    {
      "form": "acyl anhydrides",
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      "expansion": "acyl anhydride (plural acyl anhydrides)",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "An acid anhydride."
      ],
      "id": "en-acyl_anhydride-en-noun-76OyeRzO",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
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        [
          "acid anhydride",
          "acid anhydride"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) An acid anhydride."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "word": "acyl anhydride"
}

{
  "forms": [
    {
      "form": "acyl anhydrides",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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    {
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      "glosses": [
        "An acid anhydride."
      ],
      "links": [
        [
          "organic chemistry",
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        [
          "acid anhydride",
          "acid anhydride"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) An acid anhydride."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "word": "acyl anhydride"
}