bulk modulus bulk mail • bulk-material conveyer · · · Info · Definitions · Characters · · bulk modulus · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) the ratio of the change in pressure acting on a volume to the fractional change in volume. Synonyms: bulk modulus. · · Noun Definition 1 Characters · · space U+0020 b latin small letter b U+0062 d latin small letter d U+0064 k latin small letter k U+006B l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F s latin small letter s U+0073 u latin small letter u U+0075