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Hint: Question mark (?) is a wildcard. Question mark substitutes one character.
English
noun
:
hydroxyl ion
1.
hydroxyl ion
(substance)
the anion OH having one oxygen and one hydrogen atom
Synonyms
hydroxide ion
Broader (hypernym)
anion
Based on WordNet 3.0 copyright © Princeton University.
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Orcapia v/Per Bang
. English edition:
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.
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