turnover

turn·over

noun \ˈtər-ˌnō-vər\

Definition of TURNOVER

: the continuous process of loss and replacement of a constituent (as a neurotransmitter, cell, or tissue) of a living system <protein turnover in various pathological states—J. C. Waterlow> <hyperthyroidism accelerates bone turnover and shortens the normal bone remodeling cycle—Richard Sadovsky>