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Pronunciation varies by accent · noun
(organic chemistry) Any diethynyl derivative of cinnoline.
Use diethynylcinnoline when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Diethynylcinnoline means (organic chemistry) Any diethynyl derivative of cinnoline.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use diethynylcinnoline where its definition matches the intended context.
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