Ma'anar ƙamus na kalmar "zagayowar sake haifuwa" yana nufin imani, da aka yi a cikin addinai da yawa da al'adu na ruhaniya, cewa rai ko sani na mai rai yana sake dawowa bayan mutuwa zuwa sabon siffar jiki. Ana ganin wannan zagayowar sake haifuwa, wanda aka fi sani da samsara, a matsayin wani tsari na ci gaba da haihuwa, mutuwa, da sake haifuwa wanda aka tsara ta hanyar karma na mutum. Manufar sake haifuwa ita ce tsakiya ga yawancin addinai na Gabas, ciki har da Hindu, Buddha, da Jainism, kuma an yi imanin cewa yana ba da dama ga ci gaban ruhaniya da 'yanci daga wahala.