parahydrogen

名词 n.
中文释义
英 /ˌpæɹəˈhaɪdɹəd͡ʒ(ə)n/    美 /ˌpɛɹəˈhaɪdɹəd͡ʒ(ə)n/

英文释义

名词 n.
  1. The form of the hydrogen molecule (H₂) in which the two nuclei have antiparallel spin; about 25% of hydrogen at room temperature. countable,uncountable

词形变化

parahydrogens plural

词汇关系

反义词
orthohydrogen

词源

Etymology tree
Proto-Indo-European *per-
Proto-Indo-European *preh₂-
Proto-Hellenic *pərai
Ancient Greek πᾰρᾰ́ (părắ)
Ancient Greek πᾰρᾰ- (pără-)der.
English para-
Proto-Indo-European *wed-
Proto-Indo-European *-r̥
Proto-Indo-European *wódr̥
Proto-Hellenic *údōr
Ancient Greek ῡ̆̔́δωρ (hū̆́dōr)
Ancient Greek ὑδρο- (hudro-)lbor.
French hydro-
Proto-Indo-European *ǵenh₁-
Proto-Indo-European *-os
Proto-Indo-European *ǵénh₁os
Proto-Hellenic *génos
Ancient Greek γένος (génos)
Proto-Indo-European *-os
Proto-Indo-European *-ēs
Ancient Greek -ης (-ēs)
Ancient Greek -γενής (-genḗs)lbor.
French -gène
French hydrogènebor.
English hydrogen
English parahydrogen
From para- + hydrogen.
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