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neon.

The chemical element (symbol Ne) with an atomic number of 10. The second of the noble gases, it is a colourless, odorless inert gas.

4 characters1 syllables approx.English language

Meaning & usage

noun/ˈni.ɒn//ˈniˌɑn/US
  1. The chemical element (symbol Ne) with an atomic number of 10. The second of the noble gases, it is a colourless, odorless inert gas.

    uncountable
  2. The chemical element (symbol Ne) with an atomic number of 10. The second of the noble gases, it is a colourless, odorless inert gas. A form or sample of the element.

    countable
  3. Neon signs or lights, collectively.

    countable · uncountable
  4. A neon tetra fish.

    countable
  5. Describes bright and vibrant colors having a fluorescent look.

    attributive · countable · uncountable
Where this word comes from

Learned borrowing from Ancient Greek νέον (néon), neuter of νέος (néos, “new”), from earlier *νέϝος (*néwos), from Proto-Hellenic *newos, from Proto-Indo-European *néwos. By surface analysis, neo- + -on (suffix used in all noble gases).

adj/ˈni.ɒn//ˈniˌɑn/US
  1. That resembles a neon light; extremely bright; fluorescent

    not-comparable
Where this word comes from

Learned borrowing from Ancient Greek νέον (néon), neuter of νέος (néos, “new”), from earlier *νέϝος (*néwos), from Proto-Hellenic *newos, from Proto-Indo-European *néwos. By surface analysis, neo- + -on (suffix used in all noble gases).

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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.