"-thermal" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "suffix",
        "cat2": "",
        "cat3": "",
        "head": "",
        "id": ""
      },
      "expansion": "-thermal",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "-thermal",
      "name": "en-suffix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Temperature",
          "orig": "en:Temperature",
          "parents": [
            "Nature",
            "Weather",
            "All topics",
            "Atmosphere",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Relating to heat or temperatures."
      ],
      "id": "en--thermal-en-suffix-blev5hzO",
      "links": [
        [
          "heat",
          "heat"
        ],
        [
          "temperature",
          "temperature"
        ]
      ],
      "synonyms": [
        {
          "word": "thermic"
        }
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "-thermal"
}

{
  "head_templates": [
    {
      "args": {
        "1": "en",
        "2": "suffix",
        "cat2": "",
        "cat3": "",
        "head": "",
        "id": ""
      },
      "expansion": "-thermal",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "-thermal",
      "name": "en-suffix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "suffix",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English suffixes",
        "en:Temperature"
      ],
      "glosses": [
        "Relating to heat or temperatures."
      ],
      "links": [
        [
          "heat",
          "heat"
        ],
        [
          "temperature",
          "temperature"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "thermic"
    }
  ],
  "word": "-thermal"
}