# argon

/ˈɑɹˌɡɑn/ (US) · /ˈɑːɡɒn/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/argon
Updated: 2026-05-20

## Definition

a colorless, odorless gas that is part of the air we breathe. It is used in things like light bulbs and to keep food fresh in packages.

For teachers: a colorless, odorless, tasteless noble gas occurring in the Earth's atmosphere. It is chemically inert and is used in various industrial applications including lighting and food preservation.

## Examples

- Argon is used to fill the glass tubes in old light bulbs.
- Because argon is chemically inert and does not react with other elements, it serves as an ideal protective atmosphere for high-precision manufacturing processes.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.