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Updated June 2026
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.”
/ˈhaɪdrədʒən/
hy·dro·gen
Contains Y and GEN ending with three vowels - HYDRO root pattern
Worth 16 points; Y adds strategic value to this chemistry term
Look up hydrogen in an authoritative dictionary for full definitions, pronunciation, and etymology.
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