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Pronunciation varies by accent · noun
(chemistry, in combination) A chemical compound with seven oxygen atoms with double bonds..
Use heptaoxo when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Heptaoxo means (chemistry, in combination) A chemical compound with seven oxygen atoms with double bonds..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use heptaoxo where its definition matches the intended context.
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