The time it takes for an organism to produce one new generation of progeny.

In the context of the National Standard Guidelines, generation time is a measure of the time required for a female to produce a reproductively-active female offspring for use in setting maximum allowable rebuilding time periods.

The amount of time required under specific exponential growth conditions for one cell to divide, forming two daughter cells.

The average time span between two successive generations; sometimes defined as the mean age of the parents at which they give birth to their middle child.

The average amount of time between the appearances of two successive generations (parent and offspring).

The average age at which a female gives birth to her offspring. This is equivalent to the time that it takes for a population to increase by a factor equal to the Net Reproductive Rate.

The interval from one point in the cell division cycle to the same point in the cycle, one division later. Distinct from doubling time or population doubling time, which is derived from the total cell count of a population and therefore averages different generation times, including the effect of non-growing cells.

The number of years between the birth of parents and the birth of their children.

The time period from birth to average age of reproduction.

The time required for completion of the entire life cycle of an organism.

The time during which executable code is created from source code using such program development tools as a compiler and linker