"diftong" meaning in Catalan

{
  "etymology_templates": [
    {
      "args": {
        "1": "ca",
        "2": "grc",
        "3": "δίφθογγος",
        "4": "",
        "5": "two sounds"
      },
      "expansion": "Borrowed from Ancient Greek δίφθογγος (díphthongos, “two sounds”)",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek δίφθογγος (díphthongos, “two sounds”).",
  "forms": [
    {
      "form": "diftongs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "diftong m (plural diftongs)",
      "name": "ca-noun"
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Catalan entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 12 entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "ca",
          "name": "Phonetics",
          "orig": "ca:Phonetics",
          "parents": [
            "Linguistics",
            "Language",
            "Social sciences",
            "Communication",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "diphthong"
      ],
      "id": "en-diftong-ca-noun-jb1ocCtv",
      "links": [
        [
          "diphthong",
          "diphthong"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[difˈtɔŋ]",
      "tags": [
        "Central"
      ]
    },
    {
      "ipa": "[difˈtɔŋk]",
      "tags": [
        "Balearic",
        "Valencia"
      ]
    }
  ],
  "word": "diftong"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "ca",
        "2": "grc",
        "3": "δίφθογγος",
        "4": "",
        "5": "two sounds"
      },
      "expansion": "Borrowed from Ancient Greek δίφθογγος (díphthongos, “two sounds”)",
      "name": "bor+"
    }
  ],
  "etymology_text": "Borrowed from Ancient Greek δίφθογγος (díphthongos, “two sounds”).",
  "forms": [
    {
      "form": "diftongs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "diftong m (plural diftongs)",
      "name": "ca-noun"
    }
  ],
  "lang": "Catalan",
  "lang_code": "ca",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Catalan countable nouns",
        "Catalan entries with incorrect language header",
        "Catalan lemmas",
        "Catalan masculine nouns",
        "Catalan nouns",
        "Catalan terms borrowed from Ancient Greek",
        "Catalan terms derived from Ancient Greek",
        "Catalan terms with IPA pronunciation",
        "Pages with 12 entries",
        "ca:Phonetics"
      ],
      "glosses": [
        "diphthong"
      ],
      "links": [
        [
          "diphthong",
          "diphthong"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[difˈtɔŋ]",
      "tags": [
        "Central"
      ]
    },
    {
      "ipa": "[difˈtɔŋk]",
      "tags": [
        "Balearic",
        "Valencia"
      ]
    }
  ],
  "word": "diftong"
}