We have the 9-letter answer for Heavy hydrogen crossword clue, last seen in the 7 Little Words May 24, 2025 puzzle. Let us help you solve the crossword clue that has you stumped so you can finish the puzzle.
Heavy hydrogen 7 Little Words Answer is…
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Find more clues, hints, and info below.
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Clue & Answer Definitions
- DEUTERIUM (noun)
- an isotope of hydrogen which has one neutron (as opposed to zero neutrons in hydrogen)
- HYDROGEN (noun)
- a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
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