"koilo-" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "κοῖλος",
        "4": "κοῖλο-",
        "5": "hollow, concave"
      },
      "expansion": "Ancient Greek κοῖλο- (koîlo-, “hollow, concave”)",
      "name": "der"
    }
  ],
  "etymology_text": "From international scientific vocabulary, reflecting a New Latin combining form, from Ancient Greek κοῖλο- (koîlo-, “hollow, concave”).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix",
        "head": "",
        "sort": ""
      },
      "expansion": "koilo-",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "koilo-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages using catfix",
          "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": "Biology",
          "orig": "en:Biology",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Medicine",
          "orig": "en:Medicine",
          "parents": [
            "Biology",
            "Healthcare",
            "Sciences",
            "Health",
            "All topics",
            "Body",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "concave; hollow"
      ],
      "id": "en-koilo--en-prefix-KtJ5VDG5",
      "links": [
        [
          "biology",
          "biology"
        ],
        [
          "medicine",
          "medicine"
        ],
        [
          "concave",
          "concave#English"
        ],
        [
          "hollow",
          "hollow#English"
        ]
      ],
      "raw_glosses": [
        "(biology, medicine) concave; hollow"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "biology",
        "medicine",
        "natural-sciences",
        "sciences"
      ],
      "wikipedia": [
        "classical compound",
        "international scientific vocabulary"
      ]
    }
  ],
  "sounds": [
    {
      "other": "/ˈkɔɪloʊ-/"
    }
  ],
  "word": "koilo-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "κοῖλος",
        "4": "κοῖλο-",
        "5": "hollow, concave"
      },
      "expansion": "Ancient Greek κοῖλο- (koîlo-, “hollow, concave”)",
      "name": "der"
    }
  ],
  "etymology_text": "From international scientific vocabulary, reflecting a New Latin combining form, from Ancient Greek κοῖλο- (koîlo-, “hollow, concave”).",
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "prefix",
        "head": "",
        "sort": ""
      },
      "expansion": "koilo-",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "koilo-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English prefixes",
        "English terms derived from Ancient Greek",
        "English terms with IPA pronunciation",
        "Pages using catfix",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Biology",
        "en:Medicine"
      ],
      "glosses": [
        "concave; hollow"
      ],
      "links": [
        [
          "biology",
          "biology"
        ],
        [
          "medicine",
          "medicine"
        ],
        [
          "concave",
          "concave#English"
        ],
        [
          "hollow",
          "hollow#English"
        ]
      ],
      "raw_glosses": [
        "(biology, medicine) concave; hollow"
      ],
      "tags": [
        "morpheme"
      ],
      "topics": [
        "biology",
        "medicine",
        "natural-sciences",
        "sciences"
      ],
      "wikipedia": [
        "classical compound",
        "international scientific vocabulary"
      ]
    }
  ],
  "sounds": [
    {
      "other": "/ˈkɔɪloʊ-/"
    }
  ],
  "word": "koilo-"
}