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Meaning of protonium | Babel Free

Noun CEFR B2

Definitions

An exotic atom consisting of a proton bound to an antiproton.

CEFR level

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

See also

protonization protonography protonolysis protonophore protonosphere protonotary

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