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Pronunciation varies by accent · noun
(mineralogy) A dark, vitreous mineraloid produced by surface oxidation of lignite.
Use leonardite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Leonardite means (mineralogy) A dark, vitreous mineraloid produced by surface oxidation of lignite.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use leonardite where its definition matches the intended context.
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