"point d'ébullition" meaning in French

{
  "forms": [
    {
      "form": "point d’ ébullition",
      "tags": [
        "canonical",
        "masculine"
      ]
    },
    {
      "form": "points d’ébullition",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "point d’ébullition m (plural points d’ébullition)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "fr",
          "name": "Physics",
          "orig": "fr:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "boiling point"
      ],
      "id": "en-point_d'ébullition-fr-noun-19LwqWsy",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "boiling point",
          "boiling point"
        ]
      ],
      "raw_glosses": [
        "(physics) boiling point"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pwɛ̃ d‿e.by.li.sjɔ̃/"
    }
  ],
  "word": "point d'ébullition"
}

{
  "forms": [
    {
      "form": "point d’ ébullition",
      "tags": [
        "canonical",
        "masculine"
      ]
    },
    {
      "form": "points d’ébullition",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m"
      },
      "expansion": "point d’ébullition m (plural points d’ébullition)",
      "name": "fr-noun"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "French countable nouns",
        "French entries with incorrect language header",
        "French lemmas",
        "French masculine nouns",
        "French multiword terms",
        "French nouns",
        "French nouns with red links in their headword lines",
        "French terms with IPA pronunciation",
        "fr:Physics"
      ],
      "glosses": [
        "boiling point"
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "boiling point",
          "boiling point"
        ]
      ],
      "raw_glosses": [
        "(physics) boiling point"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pwɛ̃ d‿e.by.li.sjɔ̃/"
    }
  ],
  "word": "point d'ébullition"
}