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Pronunciation varies by accent · noun
(organic chemistry) A tricyclic aromatic ketone having a carbonyl group in the cyclohexene ring of phenalene.
Use phenalenone when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Phenalenone means (organic chemistry) A tricyclic aromatic ketone having a carbonyl group in the cyclohexene ring of phenalene.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use phenalenone where its definition matches the intended context.
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