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hydrogen

mastery

/ˈhaɪdɹəd͡ʒ(ə)n/noun

card 1 of 10 · context meaning

Which meaning of 'hydrogen' best matches its use in the sentence?

[Jacques] Charles was the first to send up a hydrogen balloon, 12 feet in diameter, which rose 3,123 feet, disappeared in the clouds, and fell at the distance of 15 miles.