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ESPERANTO · A WORD WITH POSSIBILITIES

neptunio.

neptunium

8 characters3 syllables approx.Esperanto language

Meaning & usage

noun/neptuˈnio/

  1. neptunium

    uncountable
Where this word comes from

Etymology tree Esperanto Neptuno Proto-Indo-European *-(i)yós Proto-Italic *-ijos Proto-Italic *-ios Old Latin -ios Latin -ius Latin -iader. Esperanto -io ▲ English neptuniumcalq. Esperanto neptunio From Neptuno (“Neptune”) + -io (“chemical element”). Calque of English neptunium.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.