"reactive" meaning in English

See reactive in All languages combined, or Wiktionary

Adjective

IPA: /riːˈæktɪv/ Audio: LL-Q1860 (eng)-Vealhurl-reactive.wav [UK] Forms: reactive [positive], more reactive [comparative], most reactive [superlative]
Head templates: {{adj|more=true}} [POS TABLE]
  1. If A is reactive, A responds to a stimulus
    Sense id: simple-reactive-en-adj-SFIeazt7
  2. A reactive metal takes part in a reaction readily.
    Sense id: simple-reactive-en-adj-LKcKuw-6 Categories (other): Chemistry
     
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  "forms": [
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      "form": "reactive",
      "tags": [
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    },
    {
      "form": "more reactive",
      "tags": [
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      "tags": [
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  "lang_code": "en",
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        "If A is reactive, A responds to a stimulus"
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      "id": "simple-reactive-en-adj-SFIeazt7"
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      "categories": [
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          "kind": "other",
          "name": "Chemistry",
          "parents": [],
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      "examples": [
        {
          "text": "francium is the most reactive of the alkali metals."
        }
      ],
      "glosses": [
        "A reactive metal takes part in a reaction readily."
      ],
      "id": "simple-reactive-en-adj-LKcKuw-6",
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        "chemistry"
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  "sounds": [
    {
      "ipa": "/riːˈæktɪv/"
    },
    {
      "audio": "LL-Q1860 (eng)-Vealhurl-reactive.wav",
      "raw_tags": [
        "Audio"
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      "tags": [
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{
  "forms": [
    {
      "form": "reactive",
      "tags": [
        "positive"
      ]
    },
    {
      "form": "more reactive",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most reactive",
      "tags": [
        "superlative"
      ]
    }
  ],
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  ],
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  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "glosses": [
        "If A is reactive, A responds to a stimulus"
      ]
    },
    {
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        "Chemistry"
      ],
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        {
          "text": "francium is the most reactive of the alkali metals."
        }
      ],
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        "A reactive metal takes part in a reaction readily."
      ],
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        "chemistry"
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    }
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      "ipa": "/riːˈæktɪv/"
    },
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}

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This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2025-04-24 from the simplewiktionary dump dated 2025-04-20 using wiktextract (813e02a and ea19a0a). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.