mortalism
/ˈmɔːtəlɪz(ə)m/ /ˈmɔːt(ə)lɪz(ə)m/Now chiefly historical
noun
The belief that the soul is mortal and dies with the body, or lies unconscious until the final resurrection.
Origin
Mid 17th century; earliest use found in Thomas Edwards (1599–1647). From mortal + -ism.