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sodium.

The chemical element (symbol Na) with an atomic number of 11 and atomic weight of 22.990. It is a soft, waxy, silvery, reactive alkali metal that is never found unbound in nature.

6 characters2 syllables approx.English language

Meaning & usage

noun/ˈsəʊ.di.əm/Received-Pronunciation/ˈsəw.dɪj.əm/British, Southern, Standard/ˈsoʊ.di.əm/Canada, General-American[ˈsoʊ.ɾi.əm]Canada, General-American
  1. The chemical element (symbol Na) with an atomic number of 11 and atomic weight of 22.990. It is a soft, waxy, silvery, reactive alkali metal that is never found unbound in nature.

    uncountable · usually
  2. The chemical element (symbol Na) with an atomic number of 11 and atomic weight of 22.990. It is a soft, waxy, silvery, reactive alkali metal that is never found unbound in nature. An atom of this element.

    uncountable · usually
  3. Employing sodium.

    attributive · uncountable · usually
Where this word comes from

Etymology tree Arabic سَوْدَاء (sawdāʔ) Arabic سُوَيْدَاء (suwaydāʔ)bor. Italian sodabor. English soda Proto-Indo-European *-om Proto-Italic *-om Latin -umder. English -ium English sodium Coined by British chemist Humphry Davy in 1808, from soda + -ium.

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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.