Standard Lemma guide
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
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noun
A rejected name for plutonium. (Esperium chemical symbol: Es)
Definition source: English Wiktionary via Wiktextract
Usage: obsolete, uncountable
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From Italian Esperio after a Greek name of Italy + -ium, Ancient Greek Ἑσπερία (Hespería, “land of the west”).
