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Meaning of eta meson | Babel Free

Noun CEFR B2

Definitions

Either of two mesons made of a mixture of up, down and strange quarks and their antiquarks

CEFR level

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

eta reduction Eta Tauri Eta Ursae Majoris Eta variant ETAAC etabonate

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