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Meaning of ethynium | Babel Free

Noun CEFR B2

Definitions

The cation, protonated acetylene (C₂H₃⁺)

uncountable

CEFR level

B2

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

See also

ethynodiol ethynol ethynyl ethynylation ethynylbenzene ethynylene