metamorphism metamorphic • metamorphize · · · Info · Definitions · Characters · · metamorphism · · Text Latin · · Script 12 · · Length Definitions · · · (noun) change in the structure of rock by natural agencies such as pressure or heat or introduction of new chemical substances. · · Noun Definition 1 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 h latin small letter h U+0068 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