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/ˌpæɹəˈhaɪdɹəd͡ʒ(ə)n/ · noun
(physics) The form of the hydrogen molecule (H₂) in which the two nuclei have antiparallel spin; about 25% of hydrogen at room temperature..
Use parahydrogen when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Parahydrogen means (physics) The form of the hydrogen molecule (H₂) in which the two nuclei have antiparallel spin; about 25% of hydrogen at room temperature..
The closest synonym depends on the sentence and intended sense.
Possible antonyms include orthohydrogen.
Use parahydrogen where its definition matches the intended context.
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