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Beginning
1
English
Toggle English subsection
1.1
Etymology
1.2
Noun
1.2.1
Antonyms
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orthohydrogen
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From Wiktionary, the free dictionary
English
[
edit
]
English
Wikipedia
has an article on:
orthohydrogen
Wikipedia
Etymology
[
edit
]
From
ortho-
+
hydrogen
.
Noun
[
edit
]
orthohydrogen
(
countable
and
uncountable
,
plural
orthohydrogens
)
(
physics
)
form
of the
hydrogen
molecule
(H
2
) in which the two
nuclei
have
parallel
spin
; about 75% of natural hydrogen
Antonyms
[
edit
]
parahydrogen
Categories
:
English terms prefixed with ortho-
English lemmas
English nouns
English uncountable nouns
English countable nouns
en:Physics
en:Hydrogen
English 5-syllable words
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