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Pronunciation varies by accent · noun
(organic chemistry) A polycyclic aromatic hydrocarbon; the acene containing five fused rings..
Use pentacene when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Pentacene means (organic chemistry) A polycyclic aromatic hydrocarbon; the acene containing five fused rings..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use pentacene where its definition matches the intended context.
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