osmotic pressure osmotically • osmous · · · Info · Definitions · Characters · · osmotic pressure · · Text Common · · Latin · · Scripts 16 · · Length 5 · · Syllables Definitions · · · (noun) (physical chemistry) the pressure exerted by a solution necessary to prevent osmosis into that solution when it is separated from the pure solvent by a semipermeable membrane. Synonyms: osmotic pressure. · · Noun Definition 1 Characters · · space U+0020 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D 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 t latin small letter t U+0074 u latin small letter u U+0075