An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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parahydrogen

پارا-هیدروژن

pârâ-hidrožen

Fr.: parahydrogène

Molecular hydrogen in which the nuclei (protons) of the two hydrogen atoms contained in the molecule have spins in opposite directions. → orthohydrogen

See also: → para-; + → hydrogen.