"opisthognathous" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "opistho-",
        "3": "-gnathous"
      },
      "expansion": "opistho- + -gnathous",
      "name": "af"
    }
  ],
  "etymology_text": "From opistho- + -gnathous.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "opisthognathous (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with opistho-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -gnathous",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Zoology",
          "orig": "en:Zoology",
          "parents": [
            "Biology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Having retreating jaws or teeth."
      ],
      "id": "en-opisthognathous-en-adj-F29tnrb1",
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "retreating",
          "retreating"
        ],
        [
          "jaw",
          "jaw"
        ],
        [
          "teeth",
          "tooth"
        ]
      ],
      "raw_glosses": [
        "(zoology) Having retreating jaws or teeth."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "opisthognathous"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "opistho-",
        "3": "-gnathous"
      },
      "expansion": "opistho- + -gnathous",
      "name": "af"
    }
  ],
  "etymology_text": "From opistho- + -gnathous.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "opisthognathous (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "English adjectives",
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with opistho-",
        "English terms suffixed with -gnathous",
        "English uncomparable adjectives",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Zoology"
      ],
      "glosses": [
        "Having retreating jaws or teeth."
      ],
      "links": [
        [
          "zoology",
          "zoology"
        ],
        [
          "retreating",
          "retreating"
        ],
        [
          "jaw",
          "jaw"
        ],
        [
          "teeth",
          "tooth"
        ]
      ],
      "raw_glosses": [
        "(zoology) Having retreating jaws or teeth."
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "biology",
        "natural-sciences",
        "zoology"
      ]
    }
  ],
  "word": "opisthognathous"
}