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/ljuːˈtiːʃiəm/ · noun
The chemical element with atomic number 71, a silvery-white metal which resists corrosion in dry air..
Use lutetium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Lutetium means The chemical element with atomic number 71, a silvery-white metal which resists corrosion in dry air..
Common synonyms include cassiopeium, lutecium, atomic number 71, lu.
The opposite depends on the specific sense.
Use lutetium where its definition matches the intended context.
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