"isentropic flow" meaning in English

{
  "forms": [
    {
      "form": "isentropic flows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "isentropic flow (plural isentropic flows)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Thermodynamics",
          "orig": "en:Thermodynamics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An idealised fluid flow in which entropy remains constant throughout the flow, or along a particular streamline."
      ],
      "id": "en-isentropic_flow-en-noun-6o7MHWey",
      "links": [
        [
          "thermodynamics",
          "thermodynamics"
        ],
        [
          "idealised",
          "idealised"
        ],
        [
          "fluid",
          "fluid"
        ],
        [
          "entropy",
          "entropy"
        ],
        [
          "constant",
          "constant"
        ],
        [
          "streamline",
          "streamline"
        ]
      ],
      "raw_glosses": [
        "(thermodynamics) An idealised fluid flow in which entropy remains constant throughout the flow, or along a particular streamline."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics",
        "thermodynamics"
      ]
    }
  ],
  "word": "isentropic flow"
}

{
  "forms": [
    {
      "form": "isentropic flows",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "isentropic flow (plural isentropic flows)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Thermodynamics"
      ],
      "glosses": [
        "An idealised fluid flow in which entropy remains constant throughout the flow, or along a particular streamline."
      ],
      "links": [
        [
          "thermodynamics",
          "thermodynamics"
        ],
        [
          "idealised",
          "idealised"
        ],
        [
          "fluid",
          "fluid"
        ],
        [
          "entropy",
          "entropy"
        ],
        [
          "constant",
          "constant"
        ],
        [
          "streamline",
          "streamline"
        ]
      ],
      "raw_glosses": [
        "(thermodynamics) An idealised fluid flow in which entropy remains constant throughout the flow, or along a particular streamline."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics",
        "thermodynamics"
      ]
    }
  ],
  "word": "isentropic flow"
}