samsara (n.) Look up samsara at Dictionary.com
"endless cycle of death and rebirth, transmigration of souls," 1886, from Sanskrit samsara "a wandering through," from sam-, prefix denoting completeness (from PIE root *sem- (1) "one; as one, together with"), + sr- "to run, glide," from PIE root *ser- (2) "to flow" (see serum).