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Pronunciation varies by accent · noun
(obsolete) A rejected name for plutonium. (Esperium chemical symbol: Es).
Use hesperium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hesperium means (obsolete) A rejected name for plutonium. (Esperium chemical symbol: Es).
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use hesperium where its definition matches the intended context.
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