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hydrothorax
hydrotropism
hydrous
hydroxide
hydroxide ion
hydroxy
hydroxyapatite
hydroxychloroquine
hydroxyl
hydroxyl ion
hydroxylamine
hydroxylate
hydroxyproline
hydrozoan
Hydrus
hyena
hyetal
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hydroxyl
hy·drox·yl [ hī dróksil ]


noun 
Definition:
 
negative ion: the negative ion formed by the attachment of an oxygen atom and a hydrogen atom. OH-
[Mid-19th century. <hydro- + oxy- + -yl]

hy·drox·yl·ic [ h drok síllik ] adjective
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