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Pronunciation varies by accent · noun
A type of acid volcanic rock containing around one tenth alkali and over one fifth quartz..
Use trachydacite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Trachydacite means A type of acid volcanic rock containing around one tenth alkali and over one fifth quartz..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use trachydacite where its definition matches the intended context.
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