"cha-" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "en",
        "3": "chaos"
      },
      "expansion": "English chaos",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "χάος",
        "t": "chasm, void, empty space"
      },
      "expansion": "Learned borrowing from Ancient Greek χάος (kháos, “chasm, void, empty space”)",
      "name": "lbor"
    }
  ],
  "etymology_text": "Combining form from English chaos. Learned borrowing from Ancient Greek χάος (kháos, “chasm, void, empty space”).",
  "forms": [
    {
      "form": "chao-",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cha-",
      "name": "en-prefix"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "alt_of": [
        {
          "word": "chao-"
        }
      ],
      "glosses": [
        "Alternative form of chao-"
      ],
      "id": "en-cha--en-prefix-taTH9zqq",
      "links": [
        [
          "chao-",
          "chao-#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme"
      ]
    },
    {
      "categories": [
        {
          "_dis": "31 69",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "34 66",
          "kind": "other",
          "name": "English terms borrowed back into English",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Pages using catfix",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Pages with 3 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Chaos."
      ],
      "id": "en-cha--en-prefix-zREnMo3q",
      "links": [
        [
          "Chaos",
          "chaos"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "cha-"
}

{
  "categories": [
    "English entries with incorrect language header",
    "English learned borrowings from Ancient Greek",
    "English lemmas",
    "English prefixes",
    "English terms borrowed back into English",
    "English terms borrowed from Ancient Greek",
    "English terms derived from Ancient Greek",
    "Pages using catfix",
    "Pages with 3 entries",
    "Pages with entries"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "en",
        "3": "chaos"
      },
      "expansion": "English chaos",
      "name": "der"
    },
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "χάος",
        "t": "chasm, void, empty space"
      },
      "expansion": "Learned borrowing from Ancient Greek χάος (kháos, “chasm, void, empty space”)",
      "name": "lbor"
    }
  ],
  "etymology_text": "Combining form from English chaos. Learned borrowing from Ancient Greek χάος (kháos, “chasm, void, empty space”).",
  "forms": [
    {
      "form": "chao-",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cha-",
      "name": "en-prefix"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "alt_of": [
        {
          "word": "chao-"
        }
      ],
      "glosses": [
        "Alternative form of chao-"
      ],
      "links": [
        [
          "chao-",
          "chao-#English"
        ]
      ],
      "tags": [
        "alt-of",
        "alternative",
        "morpheme"
      ]
    },
    {
      "glosses": [
        "Chaos."
      ],
      "links": [
        [
          "Chaos",
          "chaos"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "cha-"
}