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Beginning
1
English
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1.1
Etymology
1.2
Noun
1.3
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photopion
2 languages
Malagasy
中文
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From Wiktionary, the free dictionary
English
[
edit
]
Etymology
[
edit
]
From
photo-
+
pion
.
Noun
[
edit
]
photopion
(
plural
photopions
)
(
physics
)
A
pion
generated by the action of
light
See also
[
edit
]
photoelectron
Categories
:
English terms prefixed with photo-
English lemmas
English nouns
English countable nouns
English nouns with irregular plurals
en:Physics
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photopion
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