"electrocatalyst" meaning in English

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  "etymology_text": "Etymology tree\nFrench électro-bor.\nAncient Greek ἤλεκτρον (ḗlektron)bor.\nLatin ēlectrum\nLatin electro-bor.\nEnglish electro-\nEnglish catalysis\nProto-Indo-European *-id-\nProto-Indo-European *-yéti\nProto-Indo-European *-idyéti\nProto-Hellenic *-íďďō\nAncient Greek -ῐ́ζω (-ĭ́zō)\nProto-Hellenic *-tās\nAncient Greek -τής (-tḗs)\nAncient Greek -ῐστής (-ĭstḗs)bor.\nLatin -istader.\nOld French -istebor.\nMiddle English -ist\nEnglish -ist\nEnglish catalyst\nEnglish electrocatalyst\nFrom electro- + catalyst.",
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        "Any material, normally employed on the surface or an electrode, that catalyzes a half cell reaction."
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          "sense": "material that catalyzes a half cell reaction",
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            "masculine"
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  "word": "electrocatalyst"
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      "sense": "material that catalyzes a half cell reaction",
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  "word": "electrocatalyst"
}