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Pronunciation varies by accent · noun
(organic chemistry) A fluorescent crystalline substance, intermediate in composition between thionol and thionine..
Use thionoline when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Thionoline means (organic chemistry) A fluorescent crystalline substance, intermediate in composition between thionol and thionine..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use thionoline where its definition matches the intended context.
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