We found one dictionary that defines the word hydrogen-0:

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1. hydrogen-0: Wiktionary

Definitions from Wiktionary (hydrogen-0) ▸ noun:  Synonym of muonium ▸ Words similar to hydrogen-0 ▸ Usage examples for hydrogen-0 ▸ Idioms related to hydrogen-0 ▸ Wikipedia articles (New!) ▸ Popular adjectives describing hydrogen-0 ▸ Words that often appear near hydrogen-0 ▸ Rhymes of hydrogen-0 ▸ Invented words related to hydrogen-0