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Pronunciation varies by accent · noun
(mineralogy) A orthorhomic mineral containing iron, sulphur, hydrogen, oxygen, and uranium..
Use rietveldite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Rietveldite means (mineralogy) A orthorhomic mineral containing iron, sulphur, hydrogen, oxygen, and uranium..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use rietveldite where its definition matches the intended context.
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