loudness.
Strength of sound: how loud it is.
Meaning & usage
Strength of sound: how loud it is. The perceptual strength or amplitude of sound pressure, measured in sones or phons.
Strength of sound: how loud it is. The physical strength of the sound pressure level, measured in decibels.
Where this word comes from
From Middle English loudnesse, lowdenesse, from Old English hlūdnes, equivalent to loud + -ness.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.