Ma'anar ƙamus na kalmar "diastasis" shine rabuwa ko rata tsakanin sifofin jiki guda biyu waɗanda yawanci suke haɗuwa tare. Ana amfani da wannan kalmar don bayyana yanayin inda akwai rabuwa ko rata tsakanin tsokoki na dubura biyu, wato tsokoki da ke gudana a tsaye a gaban ciki. A wasu lokuta ana kiran wannan yanayin da "diastasis recti" kuma yana iya faruwa a lokacin daukar ciki, a cikin masu kiba, ko kuma sakamakon motsa jiki mai tsanani.