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Pronunciation varies by accent · noun
(mineralogy) An orthorhombic mineral first discovered on the Moon..
Use armalcolite when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Armalcolite means (mineralogy) An orthorhombic mineral first discovered on the Moon..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use armalcolite where its definition matches the intended context.
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