# demonstrator

/ˈdɛmənˌstɹeɪtɝ/ (US) · /dˈɛmənstɹˌeɪtɐ/ (UK) · CEFR B2 · Noun

Source: https://englishreference.com/word/demonstrator
Updated: 2026-05-19

## Definition

a person who shows how to use a product or explains a process. You often see them at a store or a fair to help customers understand a new machine.

For teachers: a person who exhibits or explains the use of a product, process, or theory. Often used in commercial or educational contexts to provide a visual or practical example.

## Examples

- The demonstrator showed us how to use the new camera.
- At the electronics fair, a professional demonstrator explained the features of the latest smart home system to potential buyers.
- The lead demonstrator walked the audience through the assembly process, ensuring that each step was clear before moving on to the next stage of the workshop.

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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.