The average number of daughters that would be born to a woman (or a group of women) if she passed through her lifetime conforming to the age-specific fertility and mortality rates of a given year. This rate is similar to the gross reproduction rate but takes into account that some women will die before completing their childbearing years. An NRR of [..]

The average number of daughters that a new-born girl would have during her lifetime if the age-specific fertility rates and mortality rates as observed in a certain year were to remain applicable.

The average number of daughters that female members of a birth cohort would bear during their reproductive life span if they were subject throughout their lives to the observed age-specific fertility [..]