"hydrogen electrode" meaning in English

{
  "forms": [
    {
      "form": "hydrogen electrodes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hydrogen electrode (plural hydrogen electrodes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Hydrogen",
          "orig": "en:Hydrogen",
          "parents": [
            "Chemical elements",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "standard hydrogen electrode"
        }
      ],
      "glosses": [
        "an electrode in which hydrogen gas is adsorbed on platinum"
      ],
      "id": "en-hydrogen_electrode-en-noun-S1HHKwNE",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "adsorbed",
          "adsorbed"
        ],
        [
          "platinum",
          "platinum"
        ]
      ],
      "raw_glosses": [
        "(chemistry, physics) an electrode in which hydrogen gas is adsorbed on platinum"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "hydrogen electrode"
}

{
  "derived": [
    {
      "word": "standard hydrogen electrode"
    }
  ],
  "forms": [
    {
      "form": "hydrogen electrodes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hydrogen electrode (plural hydrogen electrodes)",
      "name": "en-noun"
    }
  ],
  "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:Chemistry",
        "en:Hydrogen",
        "en:Physics"
      ],
      "glosses": [
        "an electrode in which hydrogen gas is adsorbed on platinum"
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "physics",
          "physics"
        ],
        [
          "adsorbed",
          "adsorbed"
        ],
        [
          "platinum",
          "platinum"
        ]
      ],
      "raw_glosses": [
        "(chemistry, physics) an electrode in which hydrogen gas is adsorbed on platinum"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "hydrogen electrode"
}