Hydrogen
8 lettersnouncommonUpdated February 2026
Definition
The lightest and most abundant chemical element in the universe, with atomic number 1. A colourless, odourless, highly flammable gas used in fuel cells and rocket fuel.
“Scientists are developing hydrogen fuel cells as a clean alternative to fossil fuels.”
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Synonyms
H
Word Game Tips
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Wordle
Contains Y and GEN ending with three vowels - HYDRO root pattern
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Scrabble
Worth 16 points; Y adds strategic value to this chemistry term
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