Orthohydrogen

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    form of the hydrogen molecule (H₂) in which the two nuclei have parallel spin; about 75% of natural hydrogen countable, form-of, uncountable

Etymology

From ortho- + hydrogen.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.