sound pressure level sound pressure • sound-producing · · · Info · Definitions · Synonyms · Characters · · sound pressure level · · Text Common · · Latin · · Scripts 20 · · Length 5 · · Syllables Definitions · · · (noun) the physical intensity of sound. Synonyms: acoustic power, sound pressure level. · · Noun Definition 1 Synonyms · · · acoustic power · · Synonym 1 Characters · · space U+0020 d latin small letter d U+0064 e latin small letter e U+0065 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 v latin small letter v U+0076