# feedstock

/ˈfidˌstɑk/ (US) · CEFR C1 · Noun

Source: https://englishreference.com/word/feedstock
Updated: 2026-10-18

## Definition

raw material that a factory or power plant uses to make something else, like fuel, plastic, or animal feed. You hear it when people talk about what goes into a process, not what comes out.

For teachers: raw material supplied to an industrial process for conversion into fuel, chemicals, or other products. Typically undergoes chemical transformation rather than direct consumption.

## Examples

- The plant uses corn as feedstock for fuel.
- The new factory turns used cooking oil into biodiesel, so local restaurants supply its main feedstock.
- As demand for sustainable aviation fuel grows, airlines compete to secure reliable feedstock that does not displace food crops or accelerate deforestation.

## Usage notes

- Commonly uncountable for material in general; plural feedstocks for different types or sources.

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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.