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Meaning of helionium | Babel Free

Noun CEFR B2

Definitions

Any atomic system containing a helium nucleus and an antihelium nucleus.

CEFR level

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

See also

heliopause heliophile heliophilia heliophilous heliophobe heliophobia

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