In demography and biology, fecundity is the actual reproductive rate of an organism or population, measured by the number of gametes (eggs), seed set, or asexual propagules. Fecundity is similar to fertility. Demography considers only human fecundity which is often intentionally limited through contraception, while biology studies all organisms. Fecundity is under both genetic and environmental control, and is the major measure of fitness. Fecundation is another term for fertilization.
fecund a. Fruitful in children; prolific.
fecund adj. fertile; fruitful; productive