"brown hydrogen" meaning in English

See brown hydrogen in All languages combined, or Wiktionary

Noun

Head templates: {{en-noun|-}} brown hydrogen (uncountable)
  1. Hydrogen produced by burning coal. Tags: uncountable Related terms: black hydrogen, blue hydrogen, gray hydrogen, green hydrogen, grey hydrogen
    Sense id: en-brown_hydrogen-en-noun-c6bdg8sX Categories (other): English entries with incorrect language header, Pages with 1 entry, Pages with entries, Carbon, Fossil fuels, Gases, Hydrogen
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          "word": "black hydrogen"
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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 2026-08-28 from the enwiktionary dump dated 2026-08-05 using wiktextract (872fc7b and 4deed51). 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.