# reforming

/ɹɪˈfɔɹmɪŋ/ (US) · /ɹɪfˈɔːmɪŋ/ (UK) · CEFR C1 · Verb

Source: https://englishreference.com/word/reforming
Updated: 2026-05-07

## Definition

to change the structure of molecules in a liquid, like oil, to make them more useful or higher quality.

For teachers: to rearrange the molecular structure of a hydrocarbon to produce a more desirable isomer or a higher-octane fuel. Typically involves heat, pressure, and catalysts in industrial processing.

## Examples

- The factory is reforming oil to make better gasoline.
- Catalytic reforming is a critical step in the refinery process to convert low-octane naphthas into high-octane liquid products.
- By reforming the molecular chains of the crude feedstock, engineers can significantly increase the yield of aromatic hydrocarbons required for high-performance aviation fuels.

## Usage notes

- The verb is transitive and typically appears in industrial or chemical engineering contexts.

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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.