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Pronunciation varies by accent · noun
(organic chemistry) A polycyclic aromatic hydrocarbon containing an unsaturated five-membered ring ortho- and peri-fused to the 1- and 9- positions of phenanthrene.
Use acephenanthrene when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Acephenanthrene means (organic chemistry) A polycyclic aromatic hydrocarbon containing an unsaturated five-membered ring ortho- and peri-fused to the 1- and 9- positions of phenanthrene.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use acephenanthrene where its definition matches the intended context.
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