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Meaning of hydrogen-1 | Babel Free

Noun CEFR B2

Definitions

Synonym of protium (“most common isotope of hydrogen”).

uncountable

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

hydrogen-2 hydrogen-3 hydrogen-4 hydrogen-bonding hydrogenase Hydrogenate