# vibrational

/vaɪˈbɹeɪʃənəɫ/ (US) · /vaɪbɹˈeɪʃənəl/ (UK) · CEFR C1 · Adjective

Source: https://englishreference.com/word/vibrational
Updated: 2026-05-30

## Definition

relating to the movement of something back and forth, like a sound or a machine. It describes things that shake or move in a repeating pattern.

For teachers: relating to or caused by vibration; involving a periodic to-and-fro motion. Often used in technical contexts to describe energy or frequency.

## Examples

- The engine produces a loud vibrational noise.
- Engineers must account for vibrational stress when designing the wings of a high-speed aircraft.
- In quantum mechanics, the vibrational energy levels of a molecule are quantized, meaning they can only take on specific discrete values rather than a continuous range.

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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.