amplitude.

The greatest displacement from a reference level in an oscillating quantity.

Use it for

Words that belong together

• wave amplitude
• vibration amplitude

On the page

The vibration's amplitude increased as the engine accelerated.

Usage notes

Primary category: academic / formal. Forms: Singular amplitude; plural amplitudes. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: analysis, description. Commonness: moderately common.