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Pronunciation varies by accent · noun
(organic chemistry) Any of a class of catalytic bicyclic heterocyclic cations.
Use pentanidium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pentanidium means (organic chemistry) Any of a class of catalytic bicyclic heterocyclic cations.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use pentanidium where its definition matches the intended context.
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